I can't let go of my ex, please help?

My ex is playing mind games & it's making me physically sick. We decided to be friends but he started ignoring me again after I agreed to have sex with him on special occassions. I only agreed because he's my first & I dont want to sleep around. He posted a long status on Facebook about how good women are trophies but he treats me less than sh**. In our relationship I was 100% honest, faithful, & loving. Even now I do nothing but love & respect him. However, he continues to hurt me. I feel worthless & foolish for trusting him. I thought he was a good man. My heart literally hurts but I can't let go. Please help.
I can't let go of my ex, please help?
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