It really hadn't been his fault -- neither of them, Tony or Bucky -- and Tony wouldn't even say it was the worst kiss he'd ever had (because it certainly hadn't been) but magic was magic and there was really only one person Tony wanted to continue kissing, and he was taking his shoes off in the doorway like an absolute old-timey nerd.
"Oh," he said, when Steve nipped at his neck and let his hands go wandering. That was nice. He wasn't sure what he'd expected after a night of wild what the fuck, but maybe it hadn't been this. Then again, that was stupid of it. Of course Steve would want to reaffirm claim. "Well, you know," he said cheerfully, bringing his hand up to card through Steve's hair. "I'm a billionaire, if I'm good at anything, it's monopolizing things."