Furthermore, my girlfriend wants to maintain a friendship with my friend and is not trying to push us apart. He is acting out in front of everyone, saying stuff like .
And due to forces beyond your control, you are now crushing on a girl who is not only unavailable, and who is not only unavailable because she is dating your best friend, but who also would not even necessarily be interested in you if she were available—a question you cannot determine the answer to without violating all the laws of both bro culture and good taste. And when you find one you like, you'll know that the best way to find out if she likes you—and to avoid missing the boat on a potential romance—is to just ask her.
Dear Auntie, I met this girl about 6 months ago and I really liked her.
She wasn't really into relationships and dating, and had a sort of "exclusive" friend-with-benefits arrangement with some guy from her college, which is out of town.
I'd like to get more insight into what he feels and what he wants.
I want to talk to him about this, so we can plan our future course of action. Update: We are no longer friends and do not interact. 8 months isn't a very long time but neither is it short, so unless she's actually talked about it, odds are she hasn't changed her opinion regarding your best friend.