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Experiment gone... right?

Summary:

Peter and Tony were an unconventional couple, to say the least, but how much more unconventional can they get when Peter decides he wants to experiment?

Notes:

Hi starker fandom!!! I've been in the community for a bit over a year now and this has been sitting half finished in my docs for about the same amount of time so I finally decided I should finish it. I've never published a fic before so I hope you'll like it!
English isn't my first language so feel free to tell me if there's any typos! Enjoy!

(See the end of the work for more notes.)

Work Text:

Peter and Tony were an unconventional couple, to say the least. Not just with their age gap, although that's what the public kept talking about. Their friends could complain for hours about how lovey dovey and obsessed with each other they were, but neither of them cared. You could almost always find Peter in Tony’s lap, or Tony playing with Peter’s hair, or any sort of contact between the two. It's like they'd die if they'd be apart. Sometimes Peter looked like he was ready to just crawl into Tony's skin and live there forever, and he probably would if he could. Whispered ‘i love yous’ and hand holds or hugs were as common as morning coffee for the two, which they also shared every day without fail, which maybe wasn't that unconventional, but the borderline obsessiveness did start only a few months into the relationship. They did seem to be thriving though, so there wasn't much to worry about.

Another aspect in which they were unconventional was probably their sex life. Tony had been part of the kink scene for years, and had slowly been introducing Peter to it over the course of their relationship (10 months, 2 weeks, 5 days and counting) and it was going good. Peter started doing his own research as well, and he was in the mood for experimenting. Just a little bit.
A few days prior they were working in the lab together, and Peter, focused on his project, asked Tony to grab a screwdriver for him. As he handed it over, Peter let a small “good boy” escape his lips, not realizing until it was too late. He glanced his eyes over to Tony, who seemed to be a little red in the face, and that's where it had ended. Ever since, Peter started dropping little comments like that whenever Tony did something for him, and he had to admit, the reaction was always adorable. He ended up wanting more of that flustered mess Tony became whenever he praised him, and he was going to get it. Because if Peter Parker wanted something, he’d get it, one way or another.

That's how they ended up here, with Tony pressed against their bedroom wall, Peter’s knee against his half hard dick and their lips fighting for dominance. Peter usually wasn't the type to complain if Tony wanted to bend him over and pound him until he cries, but he had other plans for today, and much more energy than usual. He was sure Tony could tell, and got a confirmation as he dragged him over by his shirt and threw him on the bed, eagerly starting to undo his belt.

“You’re excited today-” He was cut off by a kiss. “Very excited.” He teased, watching as Peter finally got the belt off and reached to pull his shirt away, too. Tony lifted his arms willingly, and quickly went to repeat the gesture towards Peter. Very shortly, they were both half naked and breathing hard. Peter’s jean button was open as he grinded down on Tony, letting out an annoyed whine when the friction he was getting wasn't enough. He gave a little pout as he struggled to get Tony’s pants off. After a few more moments of struggle, Tony let out a laugh and helped him with removing his own pants, and quickly went to remove Peter's too. Once they were both just in underwear, Peter pulled Tony down to the edge of the bed and got on his knees.
Without waiting a second more, he pulled off his boyfriend's underwear, watching as his dick sprang up, ready for action. He gave a few starting pumps before wrapping his lips around and licking the underside. Tony gave an appreciative groan, and Peter popped off, still stroking his cock.

“Good boy… I love when you make noises” He said in a raspy voice, looking up at Tony with a sweet yet malicious smile.
Tony stared at him dumb founded for a moment, leaning on his forearms as he stared at Peter, his face flushed red and his eyes wide.
“Oh god.. Peter-” He gently lifted his hand, moving Peter’s hair from his face with a hesitant expression on his face. “I liked that… I want to be good for you..” He whispered, his voice a little whiny. His head was spinning with thoughts and mostly arousal. He never thought he'd be this affected by praise, but hearing it from Peter did things to him, so many things.

Peter gave a smirk at him and stood up, getting on Tony’s thighs. Seeing just how much bigger Tony was compared to him always made his stomach flip.
“You wanna be good? Want to please me and be my good boy?” Peter purred, his hands holding down Tony’s hips, softly rubbing his thumbs against him. Tony let out a soft whimper, nodding vigorously, his hands gripping Peter’s thighs like he was going to disappear. “Use your words” Peter pushed, teasing Tony.
“Yes- please, please want to be good for you, want to make you feel good, please…” Tony begged immediately, taking a shuddering breath as Peter lifted himself up, whining at the loss of contact.

“I’m right here, don't worry.” Peter replied with a little laugh as he grabbed the lube bottle off their nightstand and kicked away his underwear. He got a good amount on two fingers and immediately inserted them in. With the amount the two fucked, he was already used to taking at least two of his fingers with ease. Tony moved to help but Peter flicked his hands away.
“No. You watch.” He hissed out, throwing his head back as he inserted another finger, letting out soft pants as he prepped himself further. His metabolism made it easy to go for a long time, but today he planned to really push his and Tony’s limits. Finally, he was satisfied with his work and took his fingers out, smearing the leftover lube on his boyfriend’s cock and giving a few more pumps, just to tease. He smirked, watching Tony's desperate face as he stared at him.

“Peter, please… I can't- I need to-” He choked up, and Peter just stared at him.
“Come on baby, say it. What do you want, hm?” His voice dripped with venom and pure filthy lust as he watched his boyfriend turn a darker shade of red in his face.
“Need to fuck you.. can't hold it anymore, please.” Tony begged further, using his arm to cover up his face, hoping it would save him from the embarrassment.
Peter let out a chuckle before lining himself up and slowly sinking down on Tony's dick.
“Good boy. Here we go, what do you say?” Peter pushed him further, enjoying this new dynamic more than he thought he would, which was saying something.
“Thank you si-” Tony paused before he could get it out.
“Thank you what?” Peter asked, a warning tone in his voice.
“Sir. Thank you, sir.” Tony breathed out, tears in his eyes. He gasped and groaned as Peter lifted his hips and came crashing back down, repeating the movements with purpose.
“You’re welcome baby boy.” He taunted, leaning down to give Tony a fleeting kiss before straightening back up.

He adjusted his position and moved Tony’s hands to be on his hips. “You can touch, it's okay.” He smiled.
Tony took that invitation to touch everywhere. His hands roamed down to Peter’s thighs, squeezing and grabbing as he moved to his ass and up his sides, reaching up to play with Peter's nipples, which granted him a moan. He bucked his hips up, obviously unsatisfied with their current pace. Peter frowned and pushed Tony’s waist down.
“You take what I give you, don't move. If you do that again I'll stop.” He threatened, staying still as he stared at Tony for an answer.
“Y-yes sir, ‘m sorry-” Tony whined desperately, the tears in his eyes on the brink of spilling.
“Good.” Peter replied, continuing with his slow pace as he watched Tony struggle to hold back, but he was doing so well, Peter almost pitied him.

Almost.

He was getting close and he could tell Tony was too, but he wasn't going to let him cum that easily. He pulled off and balanced on his knees, which granted him a whine from Tony.
“I need you to last a little longer, baby. Unlike me, you can't get hard 5 times in a row.” Peter teased as he moved closer to Tony's face, starting to stroke his dick.
“5 times? In.. a row?“ Tony gulped. Usually they went for a while but with breaks in between. He was supposed to last five rounds in a row? Jesus Christ, what had he gotten himself into.
Peter simply smiled sweetly at him, nodding.
“You’re gonna be the death of me” He replied as he hesitantly reached a hand behind Peter, shoving two fingers into his ass and moving right against that spot that sent sparks dancing across Peter’s vision, hitting his prostate over and over with precision. It wasn't much longer before he felt his orgasm coursing through him, white ropes landing on Tony’s face who happily took it.

Peter sat there trembling for a moment before catching his breath, wiping his cum off Tony’s face with his fingers and sticking them in his mouth, making Tony clean up all of it. Just the act of that was enough to get his dick interested again, twitching between his legs.
“God, you're perfect.” He mumbled, going back to his previous position, lazily thrusting himself onto Tony’s cock until he was fully hard again. Tony sat up and wrapped his arms around Peter, leaving small kisses and bites on his neck to try to keep himself occupied through the torturous pace they were going at.

“Aw, poor baby.” Peter said quietly, kissing Tony's head. He quickened his thrusts to give Tony some kind of satisfaction. “Tell me if you're about to cum. We can't have that happening too early.” He warned, arms wrapping around Tony's shoulders, who nodded into his neck. “Good boy.” Peter praised again. They went at it for a bit until Tony murmured a small “close” to which Peter stopped immediately and lifted himself up until only the tip was inside him. Tony whimpered at the loss of friction, almost crying against Peter’s shoulder. “You’re doing so good, baby, it's okay.” He whispered to his boyfriend who had wrapped his fingers around the base to keep himself from cumming. “Good boy.” He praised as he lowered himself again.
They kept that same routine for a while, until Tony’s brain turned to mush from the constant denial of his own orgasm. He knew he was close again, but he could barely mutter the words in between his moans and whimpers before already cumming inside Peter. He collapsed backwards on the bed, panting heavily and crying.

“Sorry- ‘m sorry, sir, didn't mean to- I'm sorry-” He whimpered, chest heaving slightly. Peter sighed and tsked softly, pulling off and lying down next to Tony, kissing his forehead and shushing him softly while actively ignoring the cum dripping from his ass, they'll clean that later.
“You’re okay, sweet boy. You're not in trouble, we’re just gonna have to adjust a little.” Peter murmured softly, pressing a kiss to Tony’s lips.
“...Adjust..?” He mumbled back, eyes half lidded as he stared up at Peter.
“Mhm, hold on- I was planning to save this for another time, but no matter, we'll use it now.” Peter stood up from the bed and went into their closet, rummaging around in there before emerging victorious with his prize. Tony was leaning up on his elbows at this point, looking at Peter curiously.

The younger boy had his hands behind his back, hiding the objects from view. “Do you think you can get hard again, baby?” He asked sweetly, smiling at Tony in a way that meant trouble.
“Um.. I-I think so… if you help me.. it might take a bit though...” Tony replied quietly, head held down in shame.
“Of course, honey. Lay back down, I'll take care of you.” Peter instructed, watching as Tony lowered himself back obediently.
Peter put his prizes on the bedside cabinet away from view before getting on his knees between Tony's legs and starting to tease his cock. It was a slow process, but he enjoyed his fill of torturing his boyfriend into hardness.

“Please- please I can't- I need-” Tony begged and whined, thrashing a little on the bed.
“Oh, no, baby. You're in no place to make demands right now.” Peter giggled from between his legs, sitting back up on the bed.
He grabbed the things from beside him and found the lube from wherever they'd thrown it previously, squirting a generous amount on his hand before slathering it all over Tony’s dick.
“Since you disobeyed me and came without permission, now you don't get to cum at all. That sounds fair, right? Consequences of your actions and all of that.” He explained as he finally grabbed his first toy to play with Tony, chuckling at the way he was whining from the stimulation. He didn't give the other man enough time to even look at the cock ring before starting to slide it over his dick. It wasn't too small, blue and flexible, but it would be enough to keep the man from orgasming. As soon as Tony felt the tight contraption being slid over his dick, he cried out, back arching as he whimpered and begged for mercy.

“No, no- Please I'm sorry, I'll be good- please sir-”
“I’m not sure I can trust that right now, sweetheart, this is for your own good, I promise.” Peter replied, a hint of malice in his voice as he lowered it all the way down to the base of his dick. Tony didn't reply, just made sweet little noises as he sat there and took it like a good boy.
“There we go, good job baby boy, you're doing so well. Put your arms up for me, please?” Peter whispered in his ear, sitting back over his waist and leaving little kisses along Tony’s neck. Without hesitation, Tony put his hands above his head, staring at Peter in adoration. The younger boy couldn't help but reward him with a slow kiss, giggling as Tony chased his mouth eagerly. He sat up a little better and grabbed the pair of leather handcuffs he'd taken from the closet, lovingly securing them over Tony's wrists, who proceeded to whine in protest.
“Ah- if you're good and don't complain, I'll take them off, okay?” Peter explained as he sat back, obviously waiting for Tony to reply.
“Yes sir…” He mumbled, pouting a little. Peter couldn't wait to see the brattier side of him come out eventually, but for now, he had a job to do.

Just as they had been previously, Peter basically used Tony as his personal sex toy, fucking himself on the older man. Tony couldn't even really touch him anymore, hands constricted above his hand as he clenched and unclenched, feeling the unrelenting leather against his wrists in a pleasure inducing way. He could only lay there and take what Peter gave him, but he was good, he didn't beg to be released or to cum or anything, his brain went back to the floaty place except that this time he didn't have to worry about not cumming, so it was even more floaty and nice, just being there boneless as the love of his life pleasured himself. Seemingly, Peter took notice of his good behavior and stopped a moment to remove the cuffs as promised. Tony whined a little more high pitched before sitting up and wrapping his arms around Peter, hiding his face in his shoulder.

“Aw, baby. You're doing so good, I'm so proud of you. We just had a little hiccup, huh? Now you don't have to worry your little head about cumming at all, I fixed that for you.” He said sweetly. By this point he'd already cum another time and was building himself up to another one.
“T-thank you sir… So good to me..” Tony managed to mumble out, clawing a little into Peter's back, but he didn't seem to mind.
Peter giggled, cooing at him as he moved his own arms around Tony's back, one hand playing with the hair at the base of his neck. He felt his boyfriend shuddering against him and smirked to himself, moving his hand around to the front until it was wrapped nicely around Tony's neck, and used it to push the older man back into the mattress, leaning on his elbow and arm to support himself as he hovered over Tony, watching his eyes roll back and that blissed out expression on his face that he was rapidly beginning to adore.
“Yeah? You like my hand on your neck?” He whispered, his tone a little mocking. He gave a short squeeze that had Tony gasping and shaking.
“Yes..! yes, feels so good, sir…” He whined, tears rolling down his face, and oh how Peter loved it.
“Maybe I should get you a collar, hm? That way you'll always have a reminder of me.” He pondered, increasing his pace a little as he did.
“Please! Please, sir, please get me a collar.. want everyone to know ‘m yours-” Tony cried, arms still around Peter. If they didn't know any better, it was almost like Peter was fucking Tony and not the other way around, and wasn't that a thought? Apparently, it was enough to get Peter to cum again, shuddering and shaking against Tony.

Everything after that became a blur of praise and whines and the sound of skin on skin, Peter fucking himself through a fourth and fifth orgasm just as promised. What he did remember was that look Tony had on his face when he managed to talk the older man through a dry orgasm. He looked absolutely beautiful, pathetic and wrecked as he lay there twitching and shaking beneath Peter, who made a mental note to ask FRIDAY for the footage of that from the security cameras later.

Finally when they were done, he somehow managed to coax Tony into the bath after removing the cock ring and letting them both have a moment of rest, making sure to hydrate and have a little snack. The older man was definitely still out of it, Peter having to help him through it, all while being clung too. Apparently Tony was a bit of a cuddle bug after being played with.
Eventually while they were cuddling peacefully in the warm bathtub that could've easily fit three more people, Tony had that thoughtful silence to him, the type Peter knew as his post nut clarity silence. In all truths, he'd been a little worried until then, Tony wasn't usually this quiet afterwards, and his own anxiety was clawing at him that maybe he'd fucked up and Tony didn't actually like it and what if he starts hating hi-

“Do you think you could top me next time?”
“What?-”
Peter sat up and stared at Tony, who had a little grin on his face. He pulled Peter back down and squeezed him in a hug, kissing his head. He huffed a little but let himself relax back into his boyfriend, thinking about it for a moment.
“Yeah, I really want to, actually. As long as we take turns though, I still like getting wrecked by you.” Peter replied finally, giggling when he heard Tony choke a little above him, clearing his throat. Apparently he hadn't expected that response.
“Well, good, cause I still like wrecking you.” He chuckled, tracing little circles over Peter's shoulder as they lapsed back into their comfortable silence, for a little while at least.

“...I still want a collar though.” Tony finally spoke again, pouting as Peter began laughing.
“Sure, baby. We'll get you a day collar.” He answered finally, fingers coming up to play with his own day collar, a silver chain with a T hanging off it. Seemingly that wasn't good enough for Tony, since he huffed and kept pouting. “Fine, and a play collar. Happy?”
“Sir yes sir.” Tony smirked, a mischievous glint in his eyes.
“Ugh, you're such a brat. Can't believe I love you this much.” Peter rolled his eyes, flicking Tony's forehead.
“I’m simply irresistibly charming.” Tony grinned.
“Maybe irresistibly annoying.” Peter huffed

“...I think I'm just yours.”

“Hm.. Yeah, that sounds about right.”

Notes:

that's all I have for now!! I'm a pretty casual writer so I'll likely not be very active plus forcing myself to get things done on a schedule freaks me out usually and then I procrastinate even harder haha but I'm hoping to upload more stuff before next year! I already have some ideas...
Thanks for reading!!