Why does this keep happening to me? 10 points?

Screw her. Get busy and throw yourself into things that make you happy. Get a summer job to keep your mind off of her and to meet new people/girls. Also I read on a dream website that often we use our ex to symbolize the person we meet next and what we want from that relationship. It doesn't mean you're not getting over her. Not sure how true that is...but if you don't have anything else more important in your life right now, MAKE something important in your life. Like getting in shape. It will give you a reason to get out of bed in the morning and something that invests in yourself and YOUR future...without her.