"Oh, God, Bruce, I'm so close!" Tony moaned, as he snapped his hips forward once more and slammed into his boyfriend.
"Me too-" He gasped. "Fuck, Tony!"
"Tony, Pepper said you'd be up- woah, okay."
A final thrust, and Tony came hard in Bruce's ass with a strangled cry, the scientist following within seconds as he squirmed between Tony's body and the desk he was bent over.
"I'll, um, come back later…" Steve muttered awkwardly, edging backwards as Tony pulled out of Bruce, smirking as the other man whined.
"No need, Captain, you've already interrupted us now. What is it?"