I've done some gaduate work in couple counseling and the only way I've seen people "get over it" is to decide to. Let go. Right now you're living in your personal reality and you are replaying the past in your mind. The more you do this the more you'll be tortured. You are not living in the present reality and focusing on what your relationship is like now and what your furture entails.
My practical advice is to keep yourself busy, enough to keep him off your mind and when he does cross your mind, train yourself to think about something else immeiately. The one thing I've learned in psychology is we have control over our thoughts- some people meditate to acheive this too. So the term "get over it" is much more than a cliche, but just decide to be done with it. SOmehow you feel guilty or so bad that you need to tortureyourself with memories of your ex and the pain. Do you deserve that? I doubt it.
A word of advice from one woman to another. Women define themselves by their relationships and you have to learn not to anymore. Who are you outside of any relationship? Why do you allow your ex to hurt you still?
From my personal perspective, boys/men will be the least of your worries several years from now. Life has it's ups and downs and this won't be the worst thing you'll experience so stop wasting time dwelling on it because someday it will seem silly. Why would you give your ex all your precious time thinking about him or the pain he caused you? He still has a hold on you and maybe you still want that connection even if it causes you pain. Just some thoughts...