Dont let yourself trap with your past with him..actually , pain is part of love, but you need to have limitations so that you will not find yourself thinking of him, besides its both your choice that you have ended your relationship with him..try going with your friends, have some fun, set a goal of moving on and pray to GOD that He will give you the courage to moved on from your past, and believe in Him that He will going to help you.
ilove-trey