Stiles is at college and accidentally texts Peter Hale one night--instead of an entirely different Peter--and they don't hate each other as much with a whole state between them.
All Stiles wanted to do was see his all time favorite band in person, and maybe perv on the drop-dead gorgeous singer, known only as H. He doesn't expect H to pick him out of the crowd, and he certainly doesn't expect to be invited back to his hotel. But hey, when is he ever going to get a chance like this again? It'll be a one night stand and they'll never see each other again. At least, that's what he thinks.
So, a man and his husband walk into a bar. The punchline: stiles finding out his hookup from the other night is married. On the plus side, he didn't help anyone cheat, exactly. On the weird side, he ends up sleeping with the husband, too.
Or the one where Stiles ends up in the middle of Peter and Chris' marriage, and the only place he can end up is hurt
Granted, Peter isn’t the sort of man to deny himself what he wants, especially when it comes to things of a carnal nature, so there’s obviously an unspoken reason for his delay. What that might be, Stiles isn’t sure, but he doesn’t much care since it's clear the man has now set aside his reservations to take their relationship into uncharted territory.
Territory of the sexy variety, in case that wasn’t clear.