Hi dirigible! I really like your fics, the concepts and execution are always immaculate. I hope to give you back some of the joy that you provide to me.

Here is a fic that started out as a stevetonygames fill, and then turned into 4k of bodyswap feels and then filthy smut. warnings for risk aware consensual kink and general bodyswap filthiness. Enjoy.

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The ride home from the Sanctum Sanctorum was silent. Tony was fretting, clenching and unclenching his hands. Steve himself kept having to calm his racing thoughts. There was nothing they could do but wait, now. At least they wouldn’t have to stay in medical. Steve knew how Tony hated it. They could both go to Tony’s brownstone apartment and spend the night there. It made sense. And if Steve was a little bit grateful for it, he didn’t need to tell Tony.
Their relationship was new enough that staying over at each other’s wasn’t usual. Steve would take any night he could get.
They got inside, spent some time eating and relaxing. Tony insisted on checking Steve over, which was ironic, but Steve wasn’t about to refuse free pampering. In the end, he had a small bruise on his hip, and the gash in Tony’s arm had long since healed.
They got into the shower anyways, a little cramped in the less-than-luxurious stall, and washed each other down. Like this, they could almost forget that they’d been body-switched. They’d seen each other naked plenty of times in plenty of situations, especially recently, but showering together was special. Steve enjoyed the unhurried gentleness of it, the way he could smooth his hands over his partner’s body, take care of them. He washed Tony’s hair, hands just the slightest bit unsure in the shorter strands of hair, fumbling with the shampoo when he realised he’d taken the one meant for dark hair.
Tony kept his eyes closed during most of the shower, leaning against Steve and letting him indulge himself.
When they were done, they dressed in loose-fitting clothing and soft socks and drifted to one of the floor-to-ceiling windows near to the work-out space. The soft glow of the setting sun made Tony’s hair shine golden orange.
Tony and Steve looked at each other.
“So.”
“Yeah. You know, I can’t believe that this hasn’t happened to us earlier. With all the times we’ve been in contact with magic…”
“There’s a first time for everything. Besides, I know that it’s happened to a few Avengers already. Really, it was just a matter of time.”
“God, I hate magic.”
Steve chuckled. At least Tony was true to himself, in his own body or not.
“I know, Tony, I know. Strange told us we’d be back in our bodies tomorrow; we just have to wait.”
“Still, it’s weird. I keep looking at my hands and…” Tony looked down at his borrowed body, his shoulders tense and neck straighter than what looked comfortable. Steve knew the feeling. Since they’d woken up in each other’s bodies, he’d stumbled over his own feet, opened a door with first way too little and then way too much force, and couldn’t spend too long looking at his current body without feeling ill. He hated the feeling that his skin was stretched wrongly across his bones, hated that the world looked and smelled and sounded different. The first five minutes after the change, he’d spent dry-heaving against the floor. He still had tremors running through him at regular intervals. Tony couldn’t be faring much better. He’d tried to drink the tea that Wong had offered them and had broken the cup, then jumped so hard at the noise that he’d hit his head against an ancient artifact. Steve hadn’t missed the way that Tony wasn’t really looking him in the eye, either.
“About the only thing I like about this is that for once I’m the taller one,” Tony said with a half-hearted smirk.
“You’re plenty taller than me when you’re in the armour, Tony. Besides, it’s just one inch.”
“Still, it matters.”
Steve quirked an eyebrow.
“I thought that size…”
Tony cut him off before he could finish his admittedly uninspired innuendo: “We’ve talked about this, Steve, you’re terrible at dirty talk. Don’t even try.”
“Maybe I’ll just stick to action, then. Come here, sweetheart.”
Tony walked up to him, standing close enough that Steve had to tip his head up slightly to keep looking him in the eyes. Like this, he could really appreciate the difference in their build. He’d always known that he was larger than Tony, but seeing it from the other side really put it into perspective. He looked at his own face, the slightly slacker jaw and piercing eyes betraying that Tony was in his body.
He looked lower, focusing his gaze on Tony’s lips. Steve hadn’t really ever spent time looking at his own lips. Like this, they almost looked like they belonged to someone else. Steve didn’t think it would be weird to kiss them. It had started out as a joke, but now that they were close enough to kiss, he found he wanted to. There was still the unsettling buzzing under his skin, even if the shower had settled things down somewhat, but he thought that sex might be just the thing to soothe it. The dopamine couldn’t hurt, Steve reasoned. And maybe it would help Tony be more at ease, if he could do something he was good at, even in an unfamiliar body. In Steve’s body. Things were a little messed up right now. But he knew Tony. He trusted him. If he closed his eyes, he didn’t think that it’d feel much different than it always felt. Tony was here, his intense focus, his beautiful intelligence, his brain working and working and working. The electric energy that always followed him was muted, mellowed by Steve’s body, but it was unmistakeable. His appearance didn’t change who he was.
Steve licked his lips. Tony, perceptive as he was, always attentive to Steve when they were just the two of them, noticed. He looked at Steve look at his lips, and his eyes went half-lidded in an expression that Steve had never seen on himself before. It shouldn’t be this hot to watch your own face, he thought, as Tony murmured:
“I didn’t know that sex with yourself was something you were into, Steve. Are you attracted to your own body, or is it the thought that we’re inside each other that turns you on?”
His voice was deeper, more gravely than it should be. It made a shiver run down Steve’s spine that had nothing to do with not being in the right body.
“We’ve been inside each other plenty already,” Steve couldn’t help but answer. He quirked his lips, momentarily pausing when he felt the hairs of his beard move on his skin, and continued:
“It’s a little bit of that. But I can’t deny that seeing myself is… an experience. And knowing that it’s you is important too. I wouldn’t do this with anyone else, Tony.”
Steve got to see himself blush and decided he liked it. Liked that Tony couldn’t hide the flush, like he usually did. Liked that he put the flush there with his words.
He put a hand against Tony’s jaw, slowly stroking it.
“Since we swapped, I’ve been hyperaware of my body. I think it’s the same to you. You’re more sensitive than usual, right? Feeling the toes inside your socks and the skin between your fingers and the drag of your shirt across your collarbone.”
Tony closed his eyes, pushing ever so slightly into Steve’s hand. His eyelashes fanned out golden-red on his cheeks, catching the last of the sunlight.
“I thought it was just me. That the serum… I know you’re usually more sensitive than me. But it’s more than normal, it has to be. We should do full-body scans, look at what’s happening with our synapses and the nerve endings and if we can see a change in neural patterns—”
Steve cut him off.
“We’ve made all the scans we can already. T’Challa and his scientists have cleared us. Strange has cleared us. You have cleared us. I know everything feels wrong, but this is magic messing with us, Tony. Let’s turn it into something enjoyable.”
He continued, enunciating each word clearly, aware of how it turned Tony on to hear Steve talk about sex.
“I want to have sex with you in my body. I want to know what it’s like for your body to come, I want to know what my hands on your body feel like.”
Tony’s attention was fully on him, now, eyes dark and interested. Steve added, softer:
“I thought you might like the idea.”
Tony’s leer was just on the wrong side of too strong, when he said:
“I’m not saying no to fucking myself, Steve. I’ve thought about it my fair share of time, I’ll have you know.”
Steve would have believed him if he’d been in his own body. As it was, Tony didn’t have the usual fine control of his face, and it betrayed his real feelings on the matter. Steve wouldn’t ask Tony about it tonight, however. If Steve had to guess, it was a combination of the loss of control of not being in his own body, and Tony not liking his own reflection very much. He’d been working on it, and Steve liked to think that he was helping Tony along. Their joint mission against Veronica Eden had kick-started their new relationship, and since then, Tony had seemed happier. Steve knew that it wasn’t enough to erase Tony’s self-worth issues, but it was a good start.
Tony had probably really thought about fucking himself, in some capacity. When you knew the multiverse was real, and you’d met your doppelganger, the question “would you fuck your clone” wasn’t theoretical anymore. And as superheroes, cloning and multiverse hopping happened more often than Steve would like. Overly personal conversations with other superheroes, too. Spider-Man had brought up the clone question once, and Steve had exited the room very fast once he’d realised that Spider-Man was very much about to fuck a clone.
The point was, Steve had thought about it, Tony had surely thought about it. And Steve couldn’t deny that he was curious. It wouldn’t be the same, like this, but it would be close enough.
Steve slid his hand to Tony’s neck, pulling slightly. Tony didn’t move for a second, and then he realised that Steve couldn’t make him move if he didn’t want to, which made his skin shiver under Steve’s fingers, and then he deliberately let himself be pulled flush against Steve.
Yeah, Tony was on board, all right.
“Let’s make those fantasises real, then,” Steve murmured against Tony’s neck. He let his other hand rest on Tony’s hip. Tony hummed, slow, languid. His body was so warm.
Tony was a lot stronger than Steve like this. Steve had an idea about how to use that to their advantage. But that meant they couldn’t get to the sex just yet. No matter. Steve was sure they could enjoy the foreplay just as much.
Tony wasn’t doing much except nuzzling Steve lightly, both hands on Steve’s waist, waiting. Steve didn’t know if it was conscious or if he’d instinctively picked up on Steve’s mood, but it pleased him all the same.
“I’m in the mood for a little bit of physical power play, honey. You okay with that?”
Tony flexed his back muscles in response, his hands squeezing hard for just a moment.
“Always. Want me to put those bulging muscles for good use, eh?”
“Yeah. I have a few ideas. Let me take charge.”
Tony ducked his head a bit to nose at Steve’s cheek.
“Sure thing, sweetcheeks. Shall we move somewhere else?”
Steve stopped him.
“No. Here is good.”
He took off his socks and stepped onto the tatami mats. Tony followed, movements slow and measured, fishing a bottle of lube out of one of the drawers and setting it within reach. Atta boy. He was still a little wary about his extra strength, Steve knew. Which was why this next part was necessary. Sparring would do them both good, and hopefully help them centre themselves into their bodies. It might be a little presumptuous, but Steve thought that they would both manage to get used to their new bodies quickly. The shower had already helped a lot. Besides, it would make Tony feel more in control of himself, something that would help settle him.
Steve thought for a while about how he wanted to tell his plan to Tony. He couldn’t go in too strong, or he might scare Tony off. The fact that Tony had said yes to power play was promising, however.
“Let’s spar a bit first. We’ll get to know our bodies better. You can test out your strength, and I can learn the limits of your body. Nothing dangerous. Some soft holds, air-boxing, that kind of stuff. And when you feel like you’re in control, we move on to the fun part.”
Tony nodded.
“Yeah. I feel better and more at home in this body than a few hours ago, which is freakish, but I’m not excluding the possibility that magic is at play. Sparring is good, though. But Steve, promise to tell me if I’m hurting you. I’m not used to going easy on my sparring partners. With you, it’s the opposite.”
“Of course,” Steve said, ”I won’t let you hurt me. This body is strong and healthy. No, don’t look at me like that. I can feel how in shape you are. I won’t be easy to break, and I’ll be careful.”
He never wanted to hurt Tony, and that included hurting his body. An argument could be made that Steve would take better care of Tony’s body than Tony usually did, but it was a cheap dig that would only sour the mood. Besides, what he was going to say next was a little contradictory with that thought.
“But there’s hurting and hurting.”
They’d already explored Steve’s masochistic side, so Tony knew that Steve liked pain.
“On this body, bruises and aches will stay. You’ll be sore tomorrow.”
He watched Tony’s eyes as he thought about it. His eyebrows twitched almost imperceptibly, and it made Steve wonder if he always did that when he was considering something. He’d have to ask Tony about it.
On the one hand, Tony wasn’t averse to some rough sex himself, but the appeal of being sore the day after might be lessened if the accompanying memories of the moment were absent. Steve spared a thought to wonder if their bodies would remember, somehow, when they switched back.
“I can take the day off. If you promise to pander to my every whim and give me long and deep massages tomorrow, then I’m all yours.” Tony smirked and stressed the words long and deep to make Steve understand what he really meant. They weren’t getting out of bed tomorrow.
He had a point, though. Steve could make Tony massage him and put ointment on him after their scene. And he would take care of Tony tomorrow. That sounded perfect, actually.
“Good. I want to be held down. I want to be trapped by your strength. I want to have bruises on me in the shape of your fingers. I want to be marked, and I want the marks to stay.”
Tony’s smile was molten possessiveness.
“I’ll enjoy marking you up, Steve. Making you mine.”
Heat curled in Steve’s gut.
They were as compatible in bed as on the battlefield, filling each other’s spaces and complementing each other’s desires. Sometimes it felt too good to be true, other times it felt like it couldn’t have gone any other way. Steve and Tony were made for each other.
Tonight, Steve was going to indulge in his manhandling kink. He’d never really gotten to explore it, too weak for anything like it before the serum, and too strong after the serum, but this was his golden opportunity. To be crushed under his lover’s weight, to feel his heart pound against Tony’s, their skin and sweat blending into each other.
He wanted to be held down and fucked like an animal.
One day, he’d convince Tony to use the Iron Man suit for it, but tonight he could have Tony, skin to skin. He looked forward to it.

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END PART ONE