I am heartbroken with no support system; how do I overcome this?

[4ev4young]

an ex came back to my life, and I knew that i should not have let it happen again; but he came back for the sole purpose of using me for sex. of course, i still had and have feelings for him. He talked to me in a very encouraging way--saying that we are going to be together, that he was inlove with me, he missed me, talking about getting married. he committed to coming back in the evening around 6 and committed to calling me around 2 in the evening. he also encouraged me to have dinner ready for us when he arrived at 6. Previous to this time, he went quite for three months, and never said a word. i used that time to try to get over him. i was doing good too. he lives in LA and I live in TX. when 2, 3, 4pm arrived, I had not heard from him. and to this day, nothing. this happened on Oct 23rd. He has pulled the same thing on me again. WHY? I am so heartbroken, i can't do my work; i can't sleep; i am crying all the time. i just want to call him to find out why. i havent called and he hasn't either. he was here visiting his friend when this happened. He also told me that he had met someone in the previous three months that he had gone quite on me. but that was over. he knows i love him. so why? I don't bother him. i don't call him. I am just trying to get on with life. should i call him to get closure and to finally end this evil thing he has done? I wanna know why? if there are any men reading this please give me some insight, also. I know he's okay because i talked to his friend, but not about him. thanks.