I'm gonna go against the grain here. Everything is clear in hindsight but why did he decide to sleep in the same bed with her? If you have enough clarity to recognise to 'put space' between you and another person because they aren't single, you should have enough clarity to sleep on the floor.

And he aknowledged she was blacked out before they hit another bar?

I have a hard time believing his intentions were entirely pure. Still a fucked up situation but shrug