Would you date a girl with guy friends that she hangs out with more than you?

My girlfriend has a guy friend that she has known for a few years. They always go out and get drunk but whenever I want to hang out with her she says she tired or busy, but she always calls to see what I'm doing at least 5 times a day. When we do hangout we have fun and I'm not the type to throw money around either. Why is she like that and should I stay with her