What would you do???

Just got done watching Grey's Amatomy. It had me thinking if I was in Izzy or George position what would I do? So here's the scenario... Your bestfriend who's a male used to be your roommate and he was recently engaged. Your not too fond of his wife but if she makes him happy okay. They've just been in a fight and she throws him out of their hotel room. He then decides to crash were he used to live which was with you and his other best girl who's a friends place. You two decide to get drunk and have fun and talk about your problems ,but here's the twist you wake up next to him in your bed with both of your clothes off (completely naked). But you don't remember what happened so there's a good chance you may not have had sex. You hurry up and get your clothes on before he wakes up and your acting supcious. But he doesn't completely remember himself . Do you tell him all that you remember or do you stay completely quiet so you don't mess up anything between him and his wife? What would you do? Say what you would do in the comments... If you want to watch it it's Grey's Anatomy season 3 episodes 18 and 19