[astroAPhi]

It's really all going to depend on the individual fraternity members and their atmosphere. Here, something like that wouldn't be a bid deal unless a girl was "ho-ing" her way through the fraternity and was staying in a different room every night (which, of course, happens!).

It's all up to you. This is a really tough situation for most of us to be giving advice to. The only thing I can say is that if you would be embarassed to walk out in the morning, you're not ready to.