Dont feel comfortable about my Girfriend's Gay Guy Friend?

Why is this guy in bed with you two? I mean your bed is your space and BFF of your girl friend or not this guy should not be in your bed or bedroom when you guys are resting or cuddling. I mean ask your girl friend how she would feel if you had a really hot friend who was a girl and was grabbing you and kissing you while she was around. Ask her how she would feel if the roles were reversed. If she says she would be ok with it you may need to find out if you both have the same idea of what kind of relationship you all are in. In the long run the ultimate decision comes down to is it worth it? Whatever you do don't confront the friend because if he is bi he can turn that against you. Confront your girlfriend and have her confront the friend or mediate the conversation between the gay friend and you. after that it's up to your girlfriend to enforce that relationship.