Please Help! What should I do?

I liked this girl for a while now, and everything was going great until recently. Long story short, we have haven't talked in a couple of weeks and I am trying to get over her. It seemed like everything was going fine and I rarely thought of her, and when I did think of her I didn't have any feelings for her. But every now and then something will remind me of some of the good times I used to have with her and all these feelings would come rushing back. I just tried to ignore it at first, but each time that it happens, the feelings are stronger. What should I do? Should I keep trying to get over her? or should I rethink this whole situation and what I am doing?