First: girlfriend of two and a half years - not a wife, so that may make a difference to you.
Lets see, she doesn't mind me going out with the boys, though she does ask that I call whenever I get home. I'm pretty sure that's just to make sure we made it

and not checking up on me, though I could be wrong. That point is not enough of an issue that I want to argue. Strip clubs (she even went once with us), bars, no big deal. It's kinda what the boys do.
When she goes out with her girlfriends (all single), I let her do her thing and try not to ask questions unless she brings it up.
Cause it is about trust. And I also feel that Sparky made an excellent point. I wouldn't want her blocking my time nor would I block hers cause its healthy to get out the house and away for a bit.
Trusting can possibly set you up for a world of hurt. I wouldn't be surprised if over a third of married couples aren't willing to totally trust.