Monster AU
Steve is a half-werewolf so he can't really discern what kind of monster everyone else is.
Then he meets Tony but Tony doesn't really let his monster side show.
Steve thinks Tony is a demon and so he tries to avoid the other man. But he can't help but be drawn to Tony's scent and ends up sleeping with Tony where he learns what Tony really is.
An incubus.
His dad's a werewolf and his mom's a Catholic. She always said to beware of demons and Steve's a good boy, so he listened to his mom.
What about sex demons tho
Tony: Thats an offensive term! We're much more than sex fiends. We like to draw out people's desires too!
Steve: I desire you to shut up
Tony: *betrayed face*
Tony doesn't like to show his demon side exactly because of all the bad rep his kind gets.
Everyone knows he's a demon, no need to show everyone what kind he is. It wouldn't change a thing.
Meeting Steve was both exciting and painful.
Exciting because look! Someone who wasn't as sex-obsessed as other people and won't trigger his monster side from showing. Painful because Steve immediately started avoiding him once he learned he was some kind of demon.
At first, he was sort of wary about Steve because who the hell avoids him like the plague but also keeps hanging out with him?
Then one thing led to another (I'm lazy whatever) and they were necking on Steve's bed.
Suddenly, Tony felt it. Steve's arousal was triggering him. His wings and tail appeared, immediately wrapping around Steve. His horns came out and that had Steve pausing.
"Y-you're a sex demon?!"
That put a stop to whatever they were doing. Tony still felt the simmering heat of arousal but it was diminishing. How could he expect Steve to feel the same way if just because of his kind, he was already losing interest in him? "
Tony suddenly felt small and humiliated. His form was out in the open and Steve has basically rejected him once again. Tony was about stand up to leave when Steve stopped him .
"Whoa- wait a dang minute!" Steve grabbed his arm.
There was that sizzle of heat that made Tony's whole being rumble. But the pain of being rejected overpowered whatever arousal he had. He shook out of Steve's hold.
"Steve, you made it blatantly obvious you didn't want this anymore. Why would-"
"Explain." Steve crossed his arms.
"Explain? What the fuck do you mean explain?! What is there to explain!" He was getting too emotional he knew but fuck it.
"You didn't say you were an incubus!" Steve defended.
"Why? Does it matter what kind of demon I am? Oh wait, I guess it does."
"That's not f-"
"Either you want me or not, Steve" Tony said tiredly. "Either you can accept this part of me or I leave and find someone who will"
Who was he kidding? There was no fucking way anyone would want a sex demon. Sex demons usually settled with one of their kind or any other demon since no one wanted them, but Tony wasn't interested in sex demons. Or anyone else. He was interested in the man in front of him who had just rejected him.
As he turned to leave again, he heard a deep growl from behind.
Looking back, it was Steve. His eyes had gone red, pupils elongated into slits. His fangs had descended and face turned into a menacing scowl.
He was growling at Tony and for a second he thought "Oh shit what did I do now?" but that second was abruptly interrupted by him being tackled to the floor. Steve was on top of him snarling.
He had shifted to his half-wolf form. Steve had never said he could shift! Instead of getting angry at the hipocrisy, Tony felt arousal bloom inside of him. "You're mine!" Steved growled out. "No one else gets to have you but me" he said as he licked at Tony's cheek.
"Oh fuck" Tony shivered.
"Steve?" Tony asked in between gasps as Steve kept licking at his face, ears, neck.
"Steve?" No response still. Finally, he used some of his power and held Steve's face.
"STEVE!" He yelled. Steve's slit eyes finally started to get rounder. It was still red though.
"Uh, what just happened?" He asked as his head got out of whatever instinct fog it had been in. He looked down at Tony and how wet his face is and how close their bodies were. He blushed , wolf ears folding down in embarrassment. Tony wanted to laugh but deep inside he thought "was he still gonna reject him despite his instincts telling him otherwise?" Tony bit his lip, trying to control his emotions.
"I shifted?" Steve asked, still not moving from his position on top of Tony. "I've never done that before. And I-" he blushed once more as if he just recalled what had transpired recently.
Tony decides, he's gonna lose Steve either way and goes for it. "Well, wolf you stopped me from finding someone else."
Steve's eyes slightly slitted once more and a frown made its appearance on the blond's face. Blush and frown still on his face, Steve huffed up. "Well wolf me is right. I don't know why you're suddenly leaving-" "Steve, you rejected me!"
"I-what?"
"I literally felt your boner die down when I shifted." Tony looked away as he said.
"I didn't reject you!" Steve was shocked apparently. "Yuh-uh you rejected me!"
"Nuh-uh-- I mean no I didn't! You just surprised me..." "I felt your arousal simmer down, Steve. What does that say, you think?" Tony challenged.
It hurt to talk about this but he knew Steve wouldn't back down. The blond visibly deflated as his ears folded in on his head and his shoulders hunched.
"I really was just surprised Tony..." Steve lowered his forehead as far as Tony's horns allowed. "I really do want you and I'm sorry if you thought otherwise." He said pressing a kiss to the horns.
Tony had tears in his eyes when he said "Oh for fuck's sake" and grabbed Steve for a kiss.
The night ended with both of them satisfied and exhausted.