Don't even sweat it pimp. My lady has guy friends and girl friends, but she kicks it with me all the time now, so I don't really trip. I don't trust none of the dudes, cause I know how they think. BUT, she's been passing up her opportunities to go out and drink/kick it with her folks just to be with me, that says enough in my book. She was invited to a party last weekend and would have been fuckin bent if I didn't go.
If you have issues, tell her. Let her know how you feel about shit from the door, and she will respect you. I had an issue the other night with some shit and I told my lady I'd talk to her about it after the party, she wanted to hear it RIGHT THEN!! Let your girl know that you're not playin games, if you love her. If you tell her what's up, what you expect, and she respects what you tell her, shit will change immediately. If not, move on now, you're wasting your time.