I have been going out with my girlfriend for 3 months. We are still in school, and our relationship was going great. Then she started hanging out with this boy more and more. He is her exboyfriend and he is still in love with her. They share a locker, and he walks her to almost every class. He takes her to church every other weekend, and then they go to his house for a couple hours. About a month ago I figured out she let him have his hand on her chest. When she's around both of us sometimes she doesn't even look at me. This makes me completely miserable and I have told her this, but she continues to spend just as much time with this boy. Am I too jealous, or should she change?