Story written for the Italian p0rnfest7 with the prompt 'Loki/Tony Stark, "Do you want to join, us, Capsicle?"'.
Also, I'm not a native speaker and this story is un-betaed, so please, forgive me for the mistakes. And I'm sorry, Steve, I didn't mean to steal your innocence
They were naked.
Completely naked.
And Loki seemed almost defenseless and without any control when he threw back his head with a pant, showing messy hair and a flushed face, eyes closed in pleasure and lips half open. He seemed almost frail, with Tony on top of him, tanner and more muscular than his slender figure, while thrusting into him moaning loudly and pinning him on the couch.
Or at least, Loki had seemed defenseless until he didn't grab Tony's nape, forcing him to show his neck where he dig his teeth, making Tony cry in what was half pleasure and half pain.
Steve tried to regain his breath, while an icy shiver went down to his back and his heart hammered in his chest. It was absurd for the superhuman hero, but he felt he was about to faint.
And he felt guilty too, which was even more absurd, because he hadn't walked into Tony's or Loki's room without knocking. No, his only fault, if it could be defined this way, was the fact that he had reached the common room whistling too softly to be heard among their moans, their whimpers and the sound of flesh slapping flesh – he could swear he had heard Loki moaning in a keen way that would haunt him forever, and there had been ironical words, exchanged with voice rough from arousal:
"More, Stark".
"What a demanding god we have here".
"Be silent and pleasure me, if you do not want to be reduced to a begging mess like last night".
"As you wish, Your Highness".
And, most of all, Steve doubted they would have heard him even if he had screamed.
He had arrived to the common area in a good mood. It was a huge living room, with a couch, some armchairs, a bar in a corner and a big television screen. All them Avengers had the access to this room, plus some more people like Pepper, Coulson and Jane Foster – not Fury, though: Tony, with the complicity of Jarvis, had always managed to keep the Director outside the whole tower.
And then, there he had found Loki and Tony.
Naked.
On the couch.
On their couch. The one he loved sitting on during the television nights.
He almost chocked, delivering a suffocated cry that disappeared instantly, overwhelmed by the sound of the two men's kisses, of their moans, of Tony thrusting into Loki and growling dirty words into the god's ear and please stop.
He knew that time had changed and that homosexuality wasn't something to hide or to ashamed of anymore – Tony had made sure of that, changing the sober wallpaper of Steve's computer with the high detailed photo of two men pleasuring each other in a very explicit way, without telling him how to remove it. In the end, only the gentle intervention of Pepper, who had changed the pornographic wallpaper with one with kittens, had allowed him to use his computer again without risking a heart attack every time.
He knew also that Tony liked both men and women, and he was okay with that.
But knowing was way different than seeing his friend and his former enemy, now Avenger on probation, naked on the couch in the dirty imitation of the pornographic movies that someone enjoyed putting into the case of his favorite Disney classics.
While he was still trying to regain control on his own legs, the two men changed position and he found himself meeting Tony's gaze with ill-concealed horror. For a moment, Tony stopped, his expression revealing a deep, almost comical surprise. Then, instead of being ashamed or embarrassed or reacting like a normal person would, or at least pulling out of Loki and trying to cover himself, he smiled.
"I didn't think great Captain America would be one who liked to watch", he commented, making Steve's face redder than the American flag while he gaped like a fish. "Do you want to join us, Capsicle?".
And all that while Loki strengthen his grip on Tony's body – legs around his hips and arms around his neck, and Tony still hasn't stopped thrusting into him, and Steve couldn't make it, it was too much, he could never look at either of them without replaying this scene in his mind, and his poor couch... – and glared at him with such malevolence that Steve realized all too well what would happen if only he decided to accept Tony's invitation.
Not that he actually wanted to accept it, he couldn't even think about it.
Truth was that his brain was frozen and he was stuck like his body had become stone, or he would have already run for his life outside the Stark Tower and maybe away from America.
Loki gave him another withering glare that promised his imminent death by dismemberment in the following five minutes and that gave him finally the strength to move: with the lungs incapacitated like he still suffered from asthma, he run to the elevator, reaching the safety of his floor.
He needed to clean himself, to take a shower and then to leave the country as fast as he could. Maybe he could ask for a brainwashing, in hope it would cancel the memories of the last few minutes that had been impressed in his mind like a scar.
His couch.
"Please, Jarvis, tell me that it was a one time thing", he wheezed, barricading himself in the bathroom. "Tell me it was the first time they did..." he swallowed " they did that on the couch in the common area".
"It was the first time. This week", Jarvis answered, with a voice which sounded sorry, almost protective. "In the last few days, they did that only in their rooms, in the bathroom, on the kitchen's table and against the wall. And in your bed".
In his bed?
With a horrified sob, Steve took off his clothes and threw himself under the shower, choosing an almost too hot temperature for the water.
He felt like he would never be clean again in his life.