He needs to desire you, a lot. Be sexy and provocative, but don't sleep together the first time you meet to “catch up” and see whether he also wants to get back together or not. Let him think about you. Drop a hook, and make him feel horrible when he sees how much you've improved, how well you are doing, how sexy you look and how your life is taking another direction. Don't try to fake it. He knows you and he'll know whether you're full of crap or not.
The quicker you can learn the things listed above and start checking them off the list, the quicker you can find yourself in a position to start trying to rekindle your relationship. You need to start making progress in the right direction, and just throwing yourself into any action isn’t enough. You need to take the right steps at the right times in order to maximize your results.
St. Jude I ask that you find it in your heart to pray for me and my boyfriends relationship. I ask that you take away any temptation my boyfriend may have or remove any other individual that will come between our relationship. Help him to be aware of how much I care and love him. I ask that you help our relationship be strong, loving, honest, and respectful. In the name of the father the son and the holy spirit. AMEN