Right....
I’m going to a party tonight with my Girlfriend and I want to make a good impression on her mates I’ve been with quite a few of them which she knows but I don’t want that to affect my game tonight I’m not trying to pull any women because I’m faithful I just think it’s better for our relationship if her friends like me including her boy friend’s too. So what do you guys suggest I do I will be out of my comfort zone most defiantly because I will barley know anyone apart from a few girls and my girlfriend. So if any of you have advice or similar situation you guys have been in please share.

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The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.

don't wait for her to introduce you to people. take initiative while you're there, go up introduce yourself to people, both male and female. make sure you appear to be having a good time even when you aren't. make sure to show her attention too, but not too much, you want her to have a good time, and you want her to assume that you're having a good time as well.