Archive of Our Own

“Are you sure this is alright with you?”

Grace is pacing around the room with his hands on his hips. He’s mostly staring at the floor, occasionally looking up to glance at Simon when addressing him. Or, more accurately, after addressing him. 

“‘Cause you really, ah,” he puts on a smile and gestures out at Simon with one hand, “you really don’t have to.”

“I know,” Simon deadpans. He doesn’t look up from the pile he’s making on the floor, the nest of blankets and pillows and anything else they might need. 

“If it’s too weird we can just, continue to keep it completely separate,” he throws his hands apart, holds them away from each other, “I’m totally fine with that. I don’t wanna, uh, pressure you into stuff.”

“I know, and you’re not. We talked about it at length.” He spares Grace a smile over the shoulder. “If you remember.” Long conversations, all of them. 

“No, no, I do,” Grace scratches the back of his neck, looks around again, “I just, uh. I still wanna give you the chance to back out, y’know?”

“If I wanna stop, I’ll tell you,” Simon sighs, the reminder familiar on his tongue. “Can you help me even out this blanket?”

Grace pauses, hesitates to process, and then nods. “Uh—yeah,” he stutters, leaning down to grab one corner of the sheet. Simon grabs the opposite corner and pulls it taught, walks along the edges to straighten it out on the floor. 

“I promise,” Simon continues as he stands back up, “that I’m completely on board with this.” He looks up at Grace. “Are you having second thoughts?”

“No! No, no I’m not,” he stammers, waving his hands. “I’m just, um. Hey, is it too warm in here do you think?”

“We already turned the cooling up,” Simon reminds him, “since, y’know. It’ll probably get pretty stuffy in here.”

“Yeah, right, yeah.” Grace fidgets with the collar of his shirt. 

Simon, despite the veneer, feels his own heart rate pick up as he looks down the room. He has to admit, it’s a little weird. But not too weird. Shit, what hasn’t been weird about the last year? What hasn’t been weird about his entire life? So sure. This might as well happen. He might as well be here, right now, in this moment, about to have this experience. 

“When’s Rock gonna be here?” Simon asks. 

“Any minute,” Grace says, and the reality hits him as the words leave his mouth. “Oh-kayyyy. Alright. Yeah. Any minute.” He starts swaying back and forth onto the balls of his feet, fidgeting with his arms, swinging them back and forth in counterweight to the rest of his body. He takes a deep breath.

Simon laughs. It’s cute. 

There’s a knock at the door. 

“Aha! You summoned him,” Grace breathlessly jokes. 

“It appears so,” Simon acknowledges. He goes to the door, swings it open, and looks down.

“Hello!” Rocky trills. 

“Welcome in,” Simon greets as he steps out of the way. Rocky scuttles in and Simon shuts the door behind him. “We were just finishing setup, actually.”

“Looks great!” Rocky says as he turns the corner. 

“Yeah, no thanks to you.”

“Grace Simon live here. Grace Simon set up and host. Obvious.”

“Uh-huh.” He’s grown to like this bitchy little alien. 

“Ayy, Rocky!” Grace looks up, body following a moment after. “Glad you’re here! We just, uh, we were just um,” he thinks, then brushes his fingers against his mouth…then returns his hands to his hips. Ryland Grace, at a loss for words. 

“Waiting for you,” Simon finishes the sentence. “Not too long, though. You got here just in time.”

“Am aware,” Rocky replies. “We start now?”

Grace blinks. “Whoa—“

“I don’t see why not,” Simon says, looking between the two of them. 

There’s a silence for a moment. Even though Rocky doesn’t have eyes, both he and Simon stare at Grace. 

“Wasting no time, huh?” Grace asks. His voice squeaks just a little bit. 

“Why not?” Rocky asks. “Already planned. All here now. Room set up. Need talk more?”

“Nah, nah I’m good.” Grace takes a deep breath again. “Unless either of you…” he points between them.

“Nope.”

“Prior agreements and plans sufficient.”

Simon points his thumb at Rocky. “What he said.”

Grace nods, a dramatic motion bobbing his whole head and upper body, shaking himself into the zone. He blows out, breath puffing his cheeks out for a moment. “Okay,” he claps, “let’s do this.”

“Okay to be nervous,” Rocky says. He’s learned plenty about Grace’s anxieties. He can also tell that Grace is already half-hard under his pants. 

“We just gotta get him out of his head,” Simon says as he approaches Grace. “C’mere.”

Simon grabs the side of Grace’s face, pulling him to face him, and connects their lips in one smooth motion. Grace tenses for a mere moment, but it quickly melts away as he leans into the kiss. His hand grabs Simon’s waist, pulling them against each other. 

Rocky raises two arms and wiggles his hands. “We start now!” he celebrates. 

The two humans keep kissing. Simon traps Grace’s lower lip between his, sucking lightly on it, brushing his tongue against it as Grace moans into him and follows his lead. As Simon pulls away, he brushes his teeth against Grace’s lip; Grace releases a tiny whimper as his other hand grabs the back of Simon’s head and pulls him back in before he can go too far. 

“Hmm. Disgust.”

Simon pulls away and looks over at Rocky, dropping his hand. “Are you gonna say that the entire time?”

“No no. Is partial joke. Continue.”

“Yeah, he just likes to say that,” Grace adds with a smile. His finger finds its way to Simon’s chin, pulling him back in. “Now please keep kissing me," he breathes.

Simon barely has time to nod before their lips are back together. His tongue, slightly longer than a human tongue should be, asks for permission along Grace’s lips; he complies and opens up, moaning into Simon’s mouth. Simon feels Grace’s shoulders relax, senses the tension starting to leave his body as Simon’s mouth pries his open, licks into him, swallows up his little sounds. Simon wraps his hand around Grace’s waist and travels down to the hem. He pulls it up just enough to sneak in, grabbing at Grace’s bare skin and enjoying the change in Grace’s breathing.

Rocky watches with rapt attention. It’s wet and a little strange, yeah, but that’s to be expected of humans. He wonders what the purpose of such a gesture is. Then again, he isn’t sure he can explain all of the Eridian displays of affection, either.

Simon’s the one to pull away this time, conscious of the presence in the room. “Sorry,” he says without turning, “are we leaving you out?”

“No worry, Rocky watch first,” he says. “Curious about human mating process.”

“…Alright,” Simon nods. He begins to wonder if he’ll be able to do this while being watched.

Might as well dive right in. He pulls Grace’s shirt up more, and Grace complies and pulls it off in a clumsy motion that makes Simon and Rocky both laugh. He blushes as he throws it to the side, then moves to kiss Simon again immediately.

As Grace undresses, Rocky can hear that their heartbeats are speeding up, blood rushing to their reproductive organs. Even if Rocky had the capability of looking away, he wouldn’t. He’s excited. He’s fascinated. It’s educational. It’s so incredibly, deeply erotic. 

He and Grace have been fooling around for ages. Then Simon came along and the two of them started going at it, too. Grace had been nervous about the situation at first; sharing partners seemed like more of a sensitive topic on Earth, though it was far from unheard of. Rocky does, of course, have to admit to some jealousy; that was his human, his best friend, his companion with whom he spent years alone after a grand adventure.

But Rocky has his own mate, anyways, and it seemed good for Grace to have another human around, for him to fulfill those needs that Rocky couldn’t quite provide. Humans seemed like they needed human touch, and both of these ones seemed starved of it, a deprivation that began long before their respective missions that led them here. It all clicked into place for Rocky when he saw the joy it brought the two humans to be together, a joy that reflected how he felt with Adrian.

Eventually Grace asked Rocky and Simon, individually, if they’d be up for something with all three of them. It took some time to warm up to the idea; neither was particularly opposed, but everyone was certainly nervous. It was unfamiliar. There were a lot of logistics to work out. Grace, of course, wanted to make sure that both of his friends were completely on board and genuinely wanted to participate; the last thing he wanted to do was force them into anything. Rocky and Simon have started getting along much better, though, so it was worth asking. After all, they share a love for Grace. They thought about it, then all talked together, and finally landed on a plan. 

Grace had wanted it so bad. He could never stop thinking about the idea of being sandwiched between them, his mind conjuring countless ways they could arrange themselves. A few years ago, he would’ve been much more embarrassed. Now, however, he carries himself with much more self-assurance, finding himself more in tune with what he wants and who he is. Sometimes, that means he wants to get fucked nasty by his two closest friends. He’s saved the universe, for crying out loud. He deserves it.

Simon agreed to this wholeheartedly. Sure, maybe it’s unusual, but more importantly, he’ll get a front-row view of Grace getting fucked from behind. He’ll get to see the faces he makes, watch Grace give in fully to his desires and let himself be used. Fuck, the thought is incredibly hot. And he can't lie, he's very curious to see how it all works with Rocky.

Rocky’s just happy to be here. He feels himself starting to shake, threatening to leak; he’s built a looser area on the underside of the suit to collect any secretions, at least; it can stretch inside of him, too, if necessary. The suit’s gone through a few iterations, and he’s finally figured out how to make it even thinner, more flexible, and closer to his body, especially on the limbs he’ll be using. It will let him feel more, get closer to his beloved Grace, help him feel good, yes yes yes this will be very good. He can’t wait to tell Adrian all about it later. Maybe they’ll even be invited next time, if this goes well!

So here they are, on the floor of the bedroom since the bed is too small, rugs and blankets and cushions laid out for comfort, a small side table with the tools they may need. Lube. Towels. They're prepared. 

Grace has wanted this for so long. His nervousness is still there, buzzing beneath the surface, but now that it’s actually happening he finds it isn’t as nervewracking as he expected. These are, after all, the two people he’s trusted the most in his entire life, two people who already know him intimately. Most of what he feels at this point is pure, intoxicating arousal.

He’s naked now, on his knees, nosing and nuzzling at Simon’s crotch as he tugs at Simon’s waistband.

“You can come closer,” Simon tells Rocky without looking up from Grace.

“Oh, okay,” Rocky says, and hesitates for a moment before scuttling over. 

He plants himself next to Grace and watches him pull down Simon’s pants. Grace keeps the boxers up, enjoying the process. He licks at Simon through the fabric, looking up sweetly as Simon runs his fingers through Grace’s hair. 

“Isn’t he pretty?” Simon asks.

“Yes yes yes,” Rocky responds while bouncing up and down, “so pretty."

Grace whimpers as he hears the praise, pauses his licking to take a deep breath. He breathes in deep the smell of Simon in front of him, pressing himself against the outline of Simon’s cock.

Rocky watches, fascinated. Simon finds that he doesn’t mind being watched. Maybe it’s even hot. He’s already quite hard, actually, so yeah, it’s definitely hot. 

Grace closes his mouth around the clothed tip of Simon’s cock, humming with satisfaction as he feels the warmth and weight on his tongue. Simon’s breath gets deeper, shakier, as he feels the friction of the wet fabric against him, the promise of Grace’s warm mouth. 

“Ohhhh Grace like to tease you too question?”

“Yeah,” Simon responds, “he does.” He pets Grace’s head fondly, stroking his hair. “It’s infuriating.” With that, he tightens his grip on Grace’s hair and pulls him in closer, forcing him against his cock. Grace whimpers as Simon grinds against his face.

Simon then yanks Grace’s head back and gestures to Rocky. “Hold him for me for a second.”

Rocky obliges with a chirp and uses a claw to hold Grace back by the scruff. Grace’s eyes nearly glaze over from being manhandled. He waits patiently. Simon shimmies his boxers down, steps out of them along with his pants, finally tugs his shirt over his head while he’s at it. 

“Thanks,” he says. He holds his cock with his hand, stroking it a few times as Grace watches, hungry. 

“Simon, please,” he says, looking up again with dilated pupils. He looks so helpless like this, on his knees and held in place. 

Simon gestures to Rocky’s hand. He understands and pushes Grace onto Simon’s cock, which elicits a muffled, obscene sound from him as Simon’s cock breaches his mouth. Teamwork. 

Rocky’s grip is strong and insistent, pushing Grace’s mouth further down than Grace thinks he can take, stopping right as he begins to gag. He’s ready to start bobbing and sucking on his own, eager for it, but Rocky’s hand doesn’t go away, doesn’t ease up on its grip. Instead, another of Rocky’s limbs comes up to the top of his head, claws spread out along his scalp. He's holding Grace firmly in place. 

Simon pulls his hips back, groaning from the pleasure of the slide, and then thrusts back in. The first few pumps are slow so he can get a feel for Grace’s limit, adjust the angle a bit. 

Grace whimpers. Simon starts fucking his face in earnest. He groans as the pleasure builds, feeling himself slide through Grace’s mouth and hit the back of his throat. Grace is careful to keep breathing, to keep this going for as long as he can without tapping out. 

They’re just getting warmed up.

“Grace enjoy having things in mouth,” Rocky points out.

“He sure does,” Simon responds between groans. “Great way to shut him up, too.”

“Indeed. Grace talk a lot.”

Grace barely even notices them talking. The taste of Simon’s cock in his mouth combined with the feeling of Rocky watching, helping, is intoxicating. 

It’s torn away when Simon pulls out. 

“Wha…”

“I'm gettin' ahead of myself,” Simon says, panting, and steps back. “Push him down, ass up.”

Rocky clicks affirmatively and pushes Grace’s head forward and down to the floor. 

“Hey—“ Grace protests, but he lets it happen, lets his ass raise up and his back arch enticingly. 

Simon grabs something off the table, then kneels next to Grace's legs. “I’ll show you how I like to open him,” he explains to Rocky, “then after that you can take over and I’ll get back to what I was doing. Sound good?”

“YES yes yes! Plan good! Very good!”

Simon smiles and then slaps Grace’s ass. “He’s fun to play with, huh?”

Rocky scuttles over to stand next to Simon. “Very fun. Fun to take care of.”

Grace shudders at the praise, at the feeling of them talking about him like he isn’t even there. Like he's a specimen they're studying together.

Simon sets the bottle of lube down. He pumps an excessive amount into his hand and then holds it over Grace, letting it fall directly between his cheeks, sliding down over his hole. “I like to make sure there’s more than enough,” he explains. He also loves the look of Grace dripping, but he’ll keep that to himself for now. 

“Come onnnnn,” Grace complains. 

“So impatient,” Rocky says. 

“Shut up,” Grace says, trying to look over at him, “you aren’t the one with your ass up like an idiot waiting for someone to do someth—oooooooh—“

Simon slides two fingers into him; he’s been fucked enough recently that they can skip the singular. 

“Another good way to get him to stop talking,” Simon observes.

“Not stop make noise though,” Rocky adds, “Grace always make noise. Gross disgust embarrass. Good noise.”

When Simon brushes against his prostate, Grace keens as if to prove their point. 

“He seems ready for three already,” says Simon, impressed. “Eager for it, huh, angel?”

“Yeah, been waiting long enough," Grace quips. He tries and fails to keep his voice steady.

“Do it,” Rocky urges, “let me soon.”

“Oh fudge, please, Rock,” Grace mutters in response, “this guy's taking forever."

“You're impatient.” Simon slips a third in, making Grace groan low and eager. Simon pulls his fingers away from each other, stretching him out. He’ll need to be more open than he usually is with Simon. 

Grace doesn’t say much now, just focuses on relaxing his body and feeling everything. He gets lightheaded at the thought of what’s to come next, a longtime fantasy finally fulfilled. The attitude he tried to cling to slips away along with his thoughts; there isn't enough room in his brain, not when his body feels like this.

A fourth finger breaches his entrance, and he groans low and strained as Simon fucks him open.

“Oh! Grace leak,” Rocky says, gesturing at Grace’s face pressed against the thin cushion on the floor. He’s drooling into it. 

“Fuck, Ryland,” Simon teases, “we’re just getting you warmed up and you’re already a mess.”

“Guhhhshutttupppppp,” Grace whines. Simon and Rocky both chuckle. 

“Alright,” Simon announces, “seem prepared enough to you?” He holds his hand still, fingers stretching Grace’s hole open.

Rocky considers it for a moment, then gives his thumbs down. “Grace look ready. Feel ready question?”

“God, please,” Grace babbles, “yeah, guh, pleeeeaaase. I’m ready.”

Simon nods, stands, and grabs the towel off of the table to wipe his hand on. He watches Grace as the man pushes himself up onto his elbows, already wobbly and unstable. Simon almost worries if Grace can even take what’s to come, how long it will be until he’s reduced to a sobbing, whimpering mess. His cock jumps at the thought.

Simon returns to his original spot in front of Grace, who perks up at the sight of Simon’s cock in front of him. He wants his mouth on it again so desperately. Grace looks up at him, eyes pleading, and Simon caresses his cheek, fingers weaving into his hair. 

“Beautiful,” Simon breathes. What an honor, to ruin this man. 

He traces Grace’s lips with his thumb, then presses it in. Grace’s eyes flutter closed as he sucks on Simon’s thumb, moaning into it, happy to have his mouth on something. 

“You might wanna get on with it before he starts complaining again,” Simon tells Rocky, but can’t get himself to look away from Grace. Not that it matters. 

“Agree,” Rocky says. He trills with glee. “Grace ready?”

“Mmmm,” Grace hums around Simon’s thumb as he bobs up and down on it. That’s a yes. 

Rocky pumps lube onto one of his arms. He’s already leaking from watching his human get stretched open, metallic fluid pooling in the space at the bottom of his suit. He’s a little clumsy from excitement and almost knocks the lube bottle over as he steps closer to Grace. 

He lifts up his front right arm, covered in the thinnest, most precise xenonite possible. He only presses one finger into Grace’s hole at first, letting him get used to the harder sensation of Rocky’s arm. And, of course, to tease. He’s so, so fun to tease. 

“I can…mm, I can take more than that,” Grace pants, pulling off of Simon’s finger and glancing back. 

“Yes. But more fun to take time. Make Grace be patient.”

“Yes, make Grace be patient,” Simon agrees. He grabs Grace by the chin and jerks his head back up to look at him. “Are you gonna be good for us?”

Grace's eyes widen at the action and he nods quick. Simon traces his thumb over his lips one more time, but pulls it away when Grace tries to take it into his mouth again, moving up Grace’s cheek and onto his head. Cupping the back of it, he pulls Grace back toward his cock. Grace obliges immediately, missing the feeling of being full. 

“Good boy,” Simon strokes his hair. He looks at Rocky. “I think he’s earned more.”

“Agreed,” Rocky says. He pulls his fingers out to reposition and add the third, held together in their usual resting position.

Slow, agonizingly slow, Rocky’s entire hand stretches his hole. Grace moans deep at the intrusion. It’s as if the sound resonates through Simon’s body and comes out of his mouth, too; god, he loves it when Grace moans on his cock, loves the way it vibrates from his throat. Knowing how vocal Grace gets when someone's fucking him makes Simon anticipate this even more. 

“So good Grace so good,” Rocky warbles, excited trills and whoops emanating from his body. His arm is so wide, stretching Grace so well; he doesn’t even have to try to get at Grace’s prostate, pushing against it, on it, past it just by virtue of being inside of him, and Grace is long gone. 

“He is,” Simon coos, still brushing Grace’s hair back. “So fuckin’ perfect.”

Rocky pulls his arm back and then thrusts it back in. Grace fucking sobs, almost collapses. He has to focus hard on keeping Simon’s cock in his mouth.

“Yeah, keep it in there,” Simon goads, thrusting into his mouth a few times with a groan. “Be good for us.”

Grace whines something like a stifled “mm-hmm” around Simon’s cock. Warmth spreads along his head as Simon pulls at his hair, using it as a handle to pull Grace back and then push him back down. Grace lets himself be manhandled; he can’t focus enough on sucking it on his own, not when he’s being nearly cleaved in twain by Rocky’s arm.

“Grace okay?” Rocky asks.

Grace somehow has it in him to lift up his arm and give him their thumbs-down.

“Good good,” Rocky responds, “more now!” 

Rocky once again pulls his arm back and then pushes back in, slowly at first, letting Grace adjust to the stretch. “So open so warm and tight,” Rocky babbles on, “so happy Grace trust like this.”

He’s fucking Grace properly now, and Simon barely has to do anything anymore as Rocky's thrusts push Grace's body forwards and pull it back. Grace’s eyes are nearly closed, fine motor control falling to the wayside as he gets lost in the pleasure of being fucked from both ends. His own cock hangs neglected, leaking and spilling onto the sheets below, twitching when Rocky pushes past his prostate again and when he can taste another burst of Simon on his tongue.

Simon starts thrusting in time with Rocky. His breathing gets deeper, faster, as he gets lost in the heat of Grace’s mouth. 

Rocky adjusts his angle and fucks Grace in just the right spot, a pang of pleasure zipping up his body and ripping a loud, wanton whine out of him. It’s jarring; his breath falters and he gags, letting Simon’s cock slip out. 

“S-sorryghh,” Grace pants, barely, in a broken voice. His forehead falls against Simon’s thigh as he catches his breath. 

“No no, Grace doing so good,” Rocky reassures him. “So sensitive.”

Simon nods in agreement at Rocky. “Think he’s earned the next thing?”

“Yes yes yes!” Rocky’s vents flutter in excitement. 

Simon looks down at Grace, cupping the side of his face. “How are you feeling?”

Grace can only nod, but it’s with fervor. He swallows and takes deep, desperate breaths.

“Good boy.” Simon slips his thumb back into Grace’s mouth, who takes it in and sucks on autopilot.

When Rocky’s arm starts vibrating, it takes everything in Grace not to bite down on Simon’s thumb as a long, pathetic moan gets punched out of his chest, squeezed out by the flex of his abdomen from the intensity of the stimulation. His cock jumps and twitches, as if to remind his partners that it’s being neglected. Just in time, Rocky lifts another arm to press underneath him, trapping Grace’s cock against his stomach, and vibrates that arm as well. 

Grace lets Simon’s thumb fall out of his mouth along with an “ooohhhhmygod ohmygod ohhsssshhhnggghh—uuhhhhhh…” his voice wrenching higher as more sounds spill out. He can taste his own tears on his tongue. His hips cant forward and back, grinding his cock and his prostate against Rocky’s respective arms. His half-lidded eyes roll back as he gets lost. 

Simon’s cock leaks onto Grace’s face in response to the sight, the sounds, the pleasure of watching him fall apart. He takes himself in hand and holds his cock right in front of Grace’s mouth, not pushing in, letting pleasure and want overwhelm Grace as Simon jacks off in front of him. 

Grace can’t help it. He tips his head up, reaching for Simon’s cock with an outstretched tongue. He’s so far gone that he doesn’t have the coordination to suck, can’t even spare the breath to let his mouth keep getting used, but he needs to taste Simon. His tongue licks at the bottom of Simon’s cock, flicking over it as it’s moved with the rest of his body back and forth. The musky, salty taste elicits another shaky series of sounds from him, desperate and horny and utterly wrecked. 

Simon shudders at the feeling. He slows his own hand to stop himself from finishing too soon; as much as he’d like to smear Grace’s beautiful, pathetic face with cum, he has other plans. 

Christ, the sensation of Rocky inside of him, pressing up against him, vibrating him from the very core is so heavenly he wonders why they haven’t tried this move sooner, in their own time; at the same time, he’s grateful, since something like this too often would probably destroy him completely, vibrate every molecule of his being apart into a permanent cloud of pleasure. He would never get anything else done again. 

And Simon’s here, too, dripping all over Grace’s face and into his mouth, his own expression a beautiful reflection of Grace’s, dilated pupils staring down in awe at the unspeakably erotic sight before him. This is Heaven, for sure. 

Simon makes an effort to sear the view before him into his brain: Grace flushed bright red, tears pooling in his glazed-over eyes and collecting in the creases and lines in his face along with the sweat, hair sticking up in every direction and tangling into the glasses that have been pushed askew onto his forehead. Tongue out, laving at Simon’s twitching cock, starving for it. Face tangled in ecstasy as he’s stimulated from behind. He looks like he’s made for this, like he’s meant to be here. 

Rocky’s vibrations travel through the air, a low hum scoring the background. He’s trilling and babbling dirty Eridian nothings, music notes flying through the air and filling it with the sound of desperation and impatience and fascination and love. His human is so beautiful, so obedient, so persistent and determined to take it all. Rocky rocks his arms back and forth just enough to provide more stimulation on Grace’s cock and prostate. 

Grace can’t take it anymore. His arms give out and he collapses his chest to the ground; Rocky’s arm beneath him is all that’s keeping his hips up. Simon scoots back and folds his knees, petting Grace’s head as he writhes and whimpers and chases down his release. 

“I’m cl-ghhh— hahhhhhhh…” Grace whines, words lost in his pleasure. 

“Already, question? So fast,” Rocky teases with his usual double-tap, “no patience.”

“I can’t helll— mmmmmmmmmmohhhohohhsh— so goo-oooooddd fuck—“

Grace turns his head to hide his face in the bedding on the floor, muffling a scream as his body trembles and twitches. 

“Nope,” Simon barks and grabs Grace’s hair again to make him look up. “Let us hear you. Look at me.”

Grace obliges, face wrecked, chin on the floor. His arms are out at his sides, flat against the floor and bent at the elbows, hands gripping the sheets; he pushes himself up ever so slightly, using all of the strength he has, just so he can make eye contact with Simon kneeling above him. Just so he can be good. Tears and drool fall and soak into the blanket. He's arching his back so beautifully, his body a bridge between Rocky and Simon. 

“Look at what you do to me,” Simon growls. He spreads his kneeling legs further, getting a good stretch between the thighs as he lowers his dick into Grace’s view. “Watching you get wrecked like this, fuck, you’re so beautiful, Ryland.” Simon trails a finger up the underside of his cock, hissing as he passes the tip and picks up a drop of precum. Grace whimpers even more at the visual, wishing it was back in its mouth. 

“You’ll have it soon, angel,” Simon promises as he wraps a hand around himself and gives it a languid stroke. 

“Please,” Grace sobs, “pl—mmmmplease, I— OUHHH—” his breath skips and eyes widen and mouth falls open as Rocky suddenly adjusts the angle again and intensifies the vibrations. His face falls forward again, so Simon pulls him back up by the hair, forcing Grace to pull himself back up onto his elbows.

“Look at me,” Simon reminds him, firm and demanding yet remaining gentle. 

“Grace being disobedient,” Rocky teases. He slows down the vibrations as punishment, stills the thrusting of his arms. “Bad bad Grace. Pathetic leaky Grace.”

“I’m s-ssorr—yyy,” Grace fights to say, nearly hyperventilating between syllables. He starts bucking his hips again, fucking himself on Rocky’s fist, crying over the loss of the same sensation he was just drowning in. 

“It’s okay,” Simon assures. “Do you think you deserve to come?”

“Please,” Grace nods and groans, more of a desparate exhale than a word. “Please please I’ll be so good please—“

“What do you think, Rock?” Simon muses. He doesn’t break eye contact with Grace. He runs his thumb over Grace’s lips again, just barely. 

Rocky whistles in thought. “Unsure. Not ready to be done with Grace.”

“Oh, we won’t be done with him,” Simon huffs a laugh. “He’ll just be more pliable.”

Grace whimpers and sobs as if to agree. 

“Good point. Compelling.” Rocky wants to tease Grace more, of course he does, but the way Grace is fucking himself on Rocky’s arm without even consciously thinking about it is driving Rocky to the brink, urging him to lose control and overwhelm Grace until he melts into a disgusting wet puddle. 

So he does. He hums those sounds again, the ones that reverberate through his entire carapace, along his limbs, deep inside of Grace and along his cock, the two prongs of his arms reaching a resonance inside of him that makes Grace wail. Even through the xenonite, he can tell how wet Grace is against him, can feel the way Grace ruts his cock over the smooth surface and throbs and twitches with increasing frequency. The inside of Rocky’s suit is getting very damp with shiny, metallic slick. 

The sounds coming out of Grace’s mouth hit Simon’s ears and send tingles down his body, leaking out of his neglected, still-hard cock. Simon scoots himself forward ever so slightly, letting the weight of his cock bob in front of Grace’s open mouth. 

“You want it?” Simon asks. 

“P-pl— hhnguuhhhhhhh…” is all he can muster. From the way he tilts his head up ever so slightly, Simon takes that as a yes. 

He pushes his hips forward, letting Grace wrap his mouth around the tip. Grace moans high and satisfied at the contact, the taste. Even with his mouth occupied again, Grace’s sounds don’t stop. The hot, delicious friction and vibration and stretch from Rocky punch out a continuous string of whimpers and moans and cries. 

Simon’s cock flexes and leaks, another burst of salt and musk hitting Grace’s tongue. It nearly pushes him over the edge, and Rocky and Simon can tell. 

“Go ahead, angel.”

“Good good good. Grace let go now.”

The pressure coiling in Grace’s entire body, concentrated in his lower abdomen, reaches a breaking point and boils over at the encouraging voices of his partners. He keeps thrusting against both of Rocky’s arms even though he can’t maintain a steady pace, just desperate, reckless rutting as pleasure floods through his entire body and he sobs and struggles to keep himself upright. Rocky vibrates directly on his prostate, all along his inner walls, stretching him so wide and making him so so sensitive, and his cock catches on the textures of Rocky’s other arm through the xenonite and he ruts his cock against a particularly good spot and the vibrations from both ends reverberate beautifully as he feels his muscles tense, legs wobble, toes curl.

Praises and encouragements somehow reach his mind through the fog of pleasure, a litany of “so good, so beautiful” and “yeah, come for us, baby” and “Grace so good at taking it” and “look at him, what a mess” and “yes Grace, want to feel Grace come” all tangling together and scrambling what’s left of Grace’s brain.

Rocky shudders at the feeling of Grace convulsing around his arm and he leans in more, needing to get closer to his human as he picks him apart from the inside. Simon pushes his cock further into Grace's mouth, making him feel used, paying no mind to pace as his cock hits the back of Grace's throat again.

Grace lets out a completely wrecked wail into Simon’s cock as he comes, clenching and spasming around Rocky as his muscles tense and release and pump ribbons of cum onto the appendage pressed against him. He’s loud and completely incoherent as he keeps thrusting against Rocky, his own cum aiding in the slide between surfaces as he rides it out. 

“Holy fuck, Ryland,” Simon pants as he takes in the sight. He can feel every sound Grace makes, and he’s quickly approaching the edge. Simon summons all the strength he can to pull out.

Grace officially has no words left. All he can do is whimper in response.

Rocky’s movements slow, vibrations now a low buzz. He fidgets the rest of his body in arousal and intrigue, singing filthy notes of encouragement and praise as he slowly pulls out. Grace whines at the loss of the feeling but uses the opportunity to relax his body flat onto the floor and catch his breath.

“Th-thaaaaahhnkk y…you,” Grace finally pants. His voice lilts upwards again as he repeats “thank you, Rockyyy…guhhh….”

“Very welcome,” Rocky quips. He tries to stay cool but can’t hide the way his fingers clack together and his vents shake and spasm. The slick collecting in his suit shines in the light, glinting translucent silver. Making Grace come was incredibly hot, but there was still more that he wanted to see. “Simon turn now?”

“I guess,” Simon smiles down at Grace while brushing back his hair, “if he thinks he can take more.”

“Mmmmmgh,” Grace mumbles in a futile attempt to confirm. 

“What was that, love?” Simon asks.

“Mm-hmmmm…”

“Must be specific, Grace,” Rocky teases.

Grace cants his stretched hole upwards, hips barely lifting from the floor. He may have come so hard he wants to pass out, but there’s more that he craves, more needs to satisfy. And frankly, he thinks he’s earned it. Thus, he makes a very compelling argument for it.

“Ple—eeasssmmmmfgggh—“

Well, it was more compelling in his head.

“Useless,” Rocky muses, “useless and stupid.”

“Very stupid.” Simon lifts himself up to his feet. “But useless…I don’t know.”

“Can’t sit up. Can’t talk. Useless.”

“Sure, maybe, but I can think of a few more things he can provide right now.” He pushes Grace’s legs apart and settles himself between them. “Would you agree, Ryland?”

Grace nods.

“Use word,” Rocky reminds him.

“I can,” Grace huffs, “I can. I can. Please. Pleasepleaseplease.”

Rocky crawls over to replace the spot Simon was in earlier, in front of Grace's head. “Need proof.”

“Gwuhhh?”

“If useful. Need proof,” Rocky repeats. The arm that had been stimulating Grace’s cock is now in front of his face.

Grace takes a moment to process it, and summons the strength to lift himself back up onto his elbows, weight on his forearms. He reaches his head forward and licks along Rocky’s arm, groaning as he tastes himself on it, cleaning his cum off of the xenonite.

Rocky coos, shudders, shakes. It’s disgusting. Gross wet human licking fluid off with more fluid. Rocky imagines Grace licking up Rocky’s slick, and more drips out of him at the thought.

Grace licks his own lips and swallows. “Need more, need— in me, please, fuck…”

“I mean, since it’s already here and all stretched out…” Simon teases as he fondles Grace’s ass. “Might as well use your hole a little more, huh?”

“Mmmmmpleeeeeeease.”

“Up,” Simon demands with a pat.

Grace nods and tries to take a deep breath, steadying himself enough to fold his legs underneath himself and raise his hips up again. His bones feel like they’ve gelatinized as he holds himself up on elbows and knees. He needs to be good. He’s almost there.

Rocky shifts his weight back and forth between his arms. “Excite excite excite!!! Rocky want to watch.”

Simon pumps more lube into his hand, strokes his cock a few times, and lines up. He’s been so hard and so turned on for so long that he’s lightheaded; the sensation as he slides in sends shivers through his body. Grace is well-stretched from Rocky’s arm and provides no resistance, but he still squeezes deliciously around Simon’s cock. 

Grace shudders as he takes it, and Simon wastes no time. As soon as he reaches the hilt, he pulls out and slams back in, groaning low with each thrust, echoed by Grace’s shaky, breathy moans. 

“You feel so good, Ryland,” Simon groans. Grace looks so good from here; he always looks good, but seeing him with his ass up and the curve of his waist on display drives Simon insane. He grabs Grace’s hip, fingers digging into the flesh hard enough to bruise.

Rocky adjusts his position and holds Grace’s other hip; together, he and Simon hold Grace in place so that Simon can fuck into him relentlessly, reaching deep with every thrust.

From Rocky's perspective, Grace looks loud, the form of his face interrupted by the waves coming out of his mouth. Rocky can still see it, though, the way Grace’s face is contorted, eyebrows raised and mouth open, eyes half-lidded and rolling back. He wishes he could leave another scar where his hand is holding Grace’s hip. 

Rocky reaches another arm beneath himself, teases at the slick entrance of his hole. The bottom of this suit is thin and incredibly flexible; it isn’t as good as it is without the covering, but it’ll still feel perfectly pleasurable. From what he understands, it’s not dissimilar to human contraceptive barriers. The slick inside of the suit helps, too, provides a warm and wet sensation that aids in the stimulation. He watches Simon fuck Grace, watches as Simon’s cock pounds in and out of the hole Rocky stretched open, watches as Grace’s cock hangs soft and useless over a puddle of his own precum. So wet and leaky, these humans. So alien. So erotic.

He needs to see what happens next. His hand breaches his own entrance, stretching the xenonite barrier up, and his fingers wiggle to stimulate himself on the inside. He shudders as more slick drips out.

Grace is watching him. His head is turned to the side now, drooling onto the floor in pleasure. He’s watching Rocky touch himself, watching him get off on the sight before him. Rocky speeds up his own self-stimulation, fingers fluttering and pressing deeper inside of himself, and he can swear Grace moans at the sight of it.

Grace is moaning a lot, though, so it’s hard to tell what’s causing which sounds. Most of all he’s lost in the sensation of Simon’s hips slamming into him, sliding against his sensitive walls, overstimulated by the pressure against his prostate after already coming once. He doesn’t think he can again but his body wants to try; his cock is still soft underneath him, yet the pressure inside of him builds again as Simon keeps up a brutal and consistent pace. 

“Fuck, Ryland, look at you,” Simon says through his teeth, “fucked open like this and still wanting more. Fuck, I’m so close, fuck—“

Simon’s breathing gets more ragged, his thrusts stuttering here and there. He picks up the pace somehow, pulling a high, whiny sob from Grace.

“You want it?” Simon asks. “Want me to come inside you, angel?”

“Uh-huhhhhh,” Grace whines. “Please, Simon, pleeeeease…”

He’s so cute when he begs. That’s something Simon and Rocky can absolutely agree on.

“Grace so desperate so wonderful so obedient so so so good so good,” Rocky goes on as he fucks himself. “Love to hear Grace beg and cry and whine.”

“Gonna come inside him,” Simon says, “so close, fuck, you feel so good Ryland, gonna—shit, fill you up, holy fuuuuck—“

Grace turns his head down into the sheets to muffle a scream as the collective praise and promise of being filled floods his body. He’s spasming around Simon’s cock, his own cock twitching despite still being soft, and he’s somehow coming again. It feels different this time, deeper, blooming from the depths inside of him and taking over every nerve in his body as he cries and clenches tight and moans “fuck thank you thankyouthankyou ohhhhohhhhh oh my god thank youuuuu…“

The sudden fluttering tightness around Simon’s cock pushes him over the edge and his legs quiver as he follows, fingers pressing even further into Grace’s flesh. “I’m coming, fuck Ryland I’m coming, take it, hahhhfu—huuuuuuuhhhck—“ and he groans incoherently as his cock pulses and pumps his cum inside of Grace’s hole. His thrusts slow as he fills him, making sure every drop goes inside of Grace.

“Fuck, yeah, good boy,” Simon mumbles as he continues riding out his orgasm, thrusting slow and firm.

“Thank youuuu,” Grace sobs again. Tears both fresh and dry cover his face. 

Simon lets go of Grace’s hip and pulls out. Yeah, there will definitely be a few deep bruises where his fingers were. He nods at Rocky to get his attention. 

Rocky leans in; he can see regardless, but wants to get even closer. He’s still touching himself, shaking in place as he’s overcome with pleasure, overwhelmed by what he’s been able to witness.

Simon grabs Grace’s asscheek and pulls it to the side, opening him up. Both he and Rocky watch as Simon’s cum drips out of Grace’s still-twitching hole. The man himself is trembling, trying to catch his breath, and he keens at the sensation of cum dripping out of him.

Rocky would say something, usually, but the sight of it pushes him up and over the peak as he shudders and whistles and sings a symphony of sounds as more slick gushes out of him, more textured than what’s already been leaking from him. The vents on top of his carapace dance around, hopping up and down in erratic patterns as he shudders through his own orgasm, or at least the Eridian equivalent. What an honor to see Grace like this. What an honor to witness their human mating process, and to be a part of it. 

And once he calms down, he’ll have a lot of questions. But he’ll have more time for that later.

“Hhhhhoooooly freakin’….fffuuuhhhh,” Grace mutters as he breathes. He lets himself fall to the floor, rolling to his side. “Guhhhhhhhhhh.”

Simon’s breathing has slowed and steadied, and he’s sitting back on his knees. “How you guys feeling?” he pants.

“Wooooooow,” is all Rocky can say.

“Hyeah, that,” Grace agrees, arm limply gesturing to Rocky in acknowledgment.

They all take a minute to settle, but it doesn’t take long for Grace to speak up again through the fuzz in his brain.

“C’meereeee,” he whines, gesturing vaguely around him and rolling over onto his back.

Rocky settles to one side of Grace, nestling himself in the space between Grace’s torso and his outstretched arm. That arm finds one of Rocky’s and holds onto it. Rocky leans carefully into Grace’s side. Simon follows suit on the other side, resting his head into Grace’s chest as Grace wraps an arm around Simon’s back and shoulder.

“This’s friggin’ awesomeee,” Grace mumbles. His eyes are closed, head lightly lolling between each side. “That was awesome.”

“Yeah, fuck, it was.”

“Rocky agree.”

“I love you guyssss.”

“Rocky love Grace!!!”

Simon reaches up to peck him on the cheek. “Love you too, angel.”

They lie like that for a long time. Simon presses soft kisses to Grace's skin in every spot his lips can reach; Rocky nuzzles his carapace against Grace, cooing and whistling softly. There are still fluids to clean up, still things to debrief, but that can wait.

For now, they bask in the afterglow.