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Peter scents him enthusiastically, nosing at Tony’s jawline as he arches his back into Peter. He misinterprets Tony’s body language and pulls away, “too much? Do you want me to-” Tony grabs Peter by the collar of his shirt and hauls him back in.
“God no, please don’t stop,” Tony tells him. He’s close to his heat, he knows because he doesn’t usually have this much patience with partners who don’t know what they’re doing. But Peter is young, in his defence, and a quick learner Tony knows because he picked up how to eat him out in no time. Peter loves it too, driving him wild even if he’s always overly cautious in bed. Symptom of his age, Tony thinks, if omegas his age are as prudish as they were when Tony was Peter’s age. He’s past pretending like sex has meaning, he has sex to get off.
Peter lets out a small moan and noses at Tony’s jawline again. He tests his limits lightly, kissing at Tony’s neck so he tilts his head a little more in encouragement. When Peter’s teeth graze his neck he moans, back arching back up into Peter. “Do that again,” Tony tells him fast, before Peter gets overcautious on him twice.
He makes a disgruntled noise as Peter pulls away and Peter smiles down at him enthusiastically. “Really? You’ll let me bite you?” he asks like it’s something special.
Takes him a moment to realize that must be age related too. He makes another impatient noise, “yeah, I don’t have hang ups about any of that stuff,” Tony tells him.
“Will you let me knot you?” he asks, cheeks turning red with embarrassment and god he’d be so much hotter if he were confident. Tony will work on it because Peter is hot and Tony likes that he’ll eat him out for however long he wants with no complaints.
He nods, “yeah I’ll let you knot me, feels fucking good.”
Peter gives him a lustful once over “can I eat you out?” he asks.
Tony can’t even believe that’s a question. “Fucking yes, baby. Do whatever you want, I just want you to make me cum.” He’s getting that whiny edge he usually gets before a heat and he finds it irritating. Peter does not because he pins Tony down, surprising him with a rough kiss. He whimpers into Peter’s mouth, drawing a small moan from Peter.
“You are so fucking hot, Mr. Stark,” Peter tells him, nosing at his neck.
He moans as Peter’s teeth dig into his neck, head tilting back so Peter can do whatever he wants. When Peter bites him again Tony’s hips buck up into Peter’s, “fuck! Fuck yeah Peter just like that,” Tony tells him.
“You like it rough?” Peter asks and Tony appreciates the confidence the kid has found.
“Yeah,” Tony breaths out, moaning softly when Peter’s finger brush against his hole.
Peter swears softly, pulling away from him so he can spread Tony’s legs out. “Fuck, you’re so wet...” Peter murmurs, leaning in for a moment before he pauses. It only lasts a second before Peter leans all the way in and licks at his hole. Tony let’s out a soft whimper as Peter goes to work exactly the way Tony likes it.
He can’t help the way his legs curl around Peter’s shoulders, drawing his head further into his ass. “Oh my god Peter, yes, that’s it. Baby, you feel so good,” Tony tells Peter, burying a hand in Peter’s blonde curls and curling his fist tight.
When Peter moans Tony barely even pays attention, way too focused on the way Peter’s fingers grip his thighs tighter, the way Peter laps at his hole with even more enthusiasm. Unable to help it Tony lets go of Peter’s hair, reaching for his cock and he starts stroking, pleasure fuelled by being on the edge of his heat and Peter’s scent isn’t hurting the situation either. Fuck, the way Tony can smell the arousal on Peter drives him wild as he grips Peter's hair tightly. Peter let’s put another small moan before he pulls back, earning an immediate noise of annoyance from Tony. “No,” Peter tells him, pulling his hand away from his cock.
He lets Peter think he’ll listen for like, three seconds before he reaches for himself again. Peter smacks his hand away, “I said no,” Peter tells him more firmly but Tony ignores him again.
“I want to cum,” Tony whines, barely having time to get the words out before has his hand pinned to the mattress.
The way Peter looks at him from between his legs makes Tony flush hard as he imagines Peter giving him that bordering on wild look while he fucks him. Peter noticed his reaction, hesitating for only a moment before he lets go of Tony’s wrist and turns to nose at the inside of his thigh. He kisses it softly, tongue flicking out to taste Tony’s skin before gently nipping at it, teeth lightly grazing a sensitive spot that makes Tony shiver. When he leans in and bites Tony harder, teeth digging into the skin this time Tony’s eyes roll back in his head and he swears his vision whites over with pleasure for a moment.
“If I don’t make you cum, you don’t get to,” Peter tells him, pausing for a moment before he smiles and noses at his thigh again, leaning in and biting the soft skin of Tony inner thigh. “Which seems unlikely,” he adds, a small edge of confidence to his voice that makes Tony’s cocky twitch. He wonders if he can get Peter to fuck him like a real alpha, pin him down and fuck his hole until he’s satisfied and the thought alone has Tony whining. It’s not a trait he loves but it can’t be helped around heats.
Peter takes his silence as compliance and returns to eating Tony out and it makes his cock harder knowing that he can’t make himself cum. Peter works him over enthusiastically, licking his hole until Tony is a moaning, near sobbing mess with his hands tangled in Peter’s hair, pushing him further into his ass. Tony can feel his orgasm coming as his breathing picks up and his moans get louder, which makes Peter choosing then to pull away particularly poor timing. “No!” Tony says, pulling at Peter’s hair. Unperturbed Peter pulls his fingers from his hair, pining Tony’s hands at his sides when he decides Peter’s plan, whatever it is, is stupid. “I was gunna cum,” Tony explains when Peter just leaves him like that, pinned under him.
“I know,” Peter tells him, small smile growing into an overly pleased grin. “You smell so damn good,” Peter says, freeing up Tony’s hands as he leans in and nips at Tony’s neck. He tilts it to the side so Peter has more room to work, moaning loudly as Peter’s fingers curl into his hair and grab hold of it, using it to force Tony’s head to the exact angle he wants and Tony’s breathing picks up again as he feels his cock start to leak.
The fact that Peter, if he notices at all, doesn’t show it as he roughly bites at Tony’s neck, free hand finding it’s way between Tony’s legs to feel at his hole turns him on more. He knows how wet he is, how fucking desperate, it’s not a shock that Peter is turned on by it. He feels Peter shift slightly, fumbling with his pants and Tony whines again. “Oh my god yes baby please fill me up, I need your fucking knot,” he says, letting out a gasp of surprise and pleasure as he feels Peter’s cock head rub against his hole. “Please baby, give me your cock I need it,” Tony whines desperately.
Tony expects slow and cautious but Peter pushes into him fast and easy, filling him all the way up as his eyes roll back into his head. "Just like that," he says, not even recognizing his own voice with that desperate, whiny pitch to it. The look Peter gives him at that as he grins, pulling out and making Tony claw at any part of Peter he can find to pull him back in.
He knows damn well his heat isn't coming, it's here, and he fucking needs it from Peter. And Peter is not cooperating by pinning his hands to the bed at his sides again even if he's looking at Tony like he's going to fuck him wild. "Beg me for it," he tells Tony.
He doesn't even think of his own damn dignity as he near yowls in frustration. "Baby I'm in heat, way you ate me out drove me to it, give me that fucking cock," he babbles, desperate enough to try and pull his hands from Peter's grasp to see if he could free himself to pull Peter into him. His efforts are fruitless and it'd be hotter in a less sexually frustrating situation.
Peter moves his hands to the space above his head, leaning into him with his whole body and Tony shivers with pleasure. "You wanna take my knot?" Peter murmurs into his ear and Tony honest to god whines.
"Fucking yes, please fill me up I need you so bad," Tony tells him, testing his wrists again to find he still isn't able to get free. Peter noses into his neck, licking and nipping at the sensitive skin and Tony can feel himself leaking again, cock throbbing with a jolt of pleasure every time Peter's teeth bite or graze his neck. "Please," Tony tries again, voice small and to his ear pitiful but Peter hears it differently because he finally puts his cock back inside Tony's hole and he basically stops paying attention to anything but the way Peter's cock buries itself inside him over and over again.
His hands get free at some point because he finds one hand buried in Peter's hair and the other clawing at Peter's back, digging in harder when Peter gets his angle just right. He hears Peter roughly growl at him to take it, feels the way Peter pulls at his hair, bites at his neck, grips his hip tightly as he fucks into Tony hard and wild, but the way Peter's cock fills him dominates his world. When he feels Peter's knot start to swell he can feel his voice is hoarse but he doesn't stop encouraging Peter, saying whatever the fuck he can think of to get Peter to keep fucking him like that.
"Tell me I'm better than your husband," Peter growls, breathing harshly into Tony's ear as his knot swells further.
"S'not even a competition, never had anyone eat me out so good I went into heat and fuck I've never wanted anyone's knot this fucking bad," Tony tells him. Steve has never suffered being bad in bed, but that requires actually sleeping with each other to matter and Peter is proving himself to be the best investment of his time he's made in years the way he makes Tony feel every time his knot pushes into his hole again. It's getting so big, so close to being ready and Tony can't help the small, desperate keening noises he's letting out in response.
Peter's lips crash into his and Tony happily laps up the attention from his alpha, leaning up into Peter's body as much as he can with Peter draped over him. He needs Peter so bad right now, needs that swelling knot to lock him in and fill him up with his alpha's cum. He can feel Peter needs it too as he runs his hands up and down Peter's body to eventually settle in his ass, helping Peter fill him all the way up as he tilts he hips into it.
"Oh, fuck!" Peter yells out, mouth dropping open in pleasure as his blonde curls flop into his forehead and his cock pushes into Tony one final time, knot filling all the way as it pushes past Tony's rim. Tony hears Peter say something else but his fully filled knot locking into him as his cock spurts as hard as Peter's does inside him has him distracted. It takes a good while before Tony senses come back to him enough to return to planet earth and Peter gently telling him how good he was and how perfect he took his knot.
"You wanna keep doing this?" Tony asks, running his fingers through Peter's hair to try and sort out how messy he got it while fucking him.
Peter lets out a loud snort, "Mr. Stark what the fuck kind of stupid question is that?" he asks, almost offended at the suggestion he'd want to stop.
Tony grins and lets out a small laugh, "I'm just saying, married omegas aren't everyone's thing."
Peter snorts again, "his loss my gain," he tells Tony, pushing him back into his bed and kissing him hard. Tony can feel the fever rising back up again, that bone deep need for his alpha to get him off and get him off now and he's grateful for Peter being here to fuck the shit out of him exactly the way he likes.