I suppose it is most likely it is all out of your own imagination. If your buddies are really your good friends, they should understand what you are feeling. When you are in doubt, it is better to talk openly to them. I am afraid that your attitude towards your friends (especially when your gf is around) may have damage the development of your love affairs with your gf. Read more carefully your first message, it seems that you actually revealed your love to your gf only recently and your friends don't een know yet, right? If that's the case, maybe it is really your own imagination. These days, not many people can't accept such happenings. Good luck!