Please answer this question?

Ok, I'm 16 and I have a girlfriend, but I don't really ever call her and she never calls me. Now I don't call her because, whenever I dial her number on my phone I always hang up, I mean I called plenty of other girls or ex-girlfriends I had, but I always punk out when I call her. I really want to get to know her more, and just the other day I called her if she wanted to check out my band and she said ok and I'll be picking her up tomorrow. When I pick her up tomorrow she will see my band and i'm going to take her out. She is a senior and is going to college after the summer, now i still got 2 yrs. of high school left. I really like her. So the question is do you think I should break up with her or find a way to still go out with her?