I've met nearly all of her friends since we started to have a relationship together. She has more guy friends then women friends... however this doesn't bother me... at least it never ever has in the past.

here's the problem: I can't seem to want to get to know/have fun with a certain group of guys she occasionally wants to hang out with (one of them being her "best guy friend")

she has had problems with realizing who her true friends are, and I helped her work through all of this during our relationship. Anyway what brought this up is tonight her best guy friend asked her to hang out with them and she said she would bring me, so I came along. We ended up going to this auto garage type of place and standing around and watching them work on a car (about 5-6 guys there total and then us). Some of them left to get booze so we could drink. I found this kind of stupid to stand here and freeze my butt off and do nothing, so I said I was going to leave soon... and I did... but not on a bad note or anything.

it's only with these group of guys that I feel as if I don't "fit in" or cannot have fun with. This is my 3rd time seeing him and his random friends. I've hung out with her other friends and did not have a problem.

is what I did wrong? How should have handled this if I was. What should I do in the future? How should me and her talk about this without arguing?

anything else would be great too, thanks.

I don't believe you've done anything "wrong", especially because, as you said, you did not leave on a bad note.
You shouldn't feel as though you are obligated to become best friends with her best friends. In fact, its almost better that you can maintain a relationship while still being able to have separate groups of friends.
From the sound of things, this isn't bothering her so much as it is you. Since you say you are not jealous of her spending time with her friends, then I would suggest finding your own separate groups of friends as well. While she spends time (in the freezing cold, staring at cars) you and your friends can go out. What is most important to keep in mind, is that, at the end of the day, she is still your girl. At the end of the day, you will still sleep in the same bed, together.

So, to sum it all up, don't worry. Allow your girlfriend to socialize with these guys, after all, if you two spent every second together, I'm sure you both would feel a little stifled. In the meantime, find ways to enjoy yourself while she is with them. Indugle in your hobbies or interests that she doesn't share with you.
After all, relationships are about compromise, but those compromises don't have to be dreadfully unbearable ;)

-m

If this group is not your cup of tea, then don't hang with them. Do what you enjoy, with the people you enjoy, and don't worry so much about her friends.

Discuss your feelings and concerns regarding this particular group of friends with her, in a matter-of-fact, non-argumentative sort of way. If you sense red flags where this group of guys are concerned, it's probably for a good reason. You have every right not to want to hang out with this group of guys if you don't want to, whether they're her friends or not. Decide on what you feel is best for you. If you decide that in fact you don't want to keep company with this group them she'll likewise have to make some decisions of her own and she has several options: she can continue the relationship with you and also hang out with these friends but not in your presence, she can end her friendship with these guys or she can end her relationship with you. You'll have to let her make her own decision and realize that she has just as much right to make her choices as you have to make yours.