How do I stop being pathetic?

My feelings are so confused right now. I am deeply in love with someone who does not love me. One minute I am over him waiting for the end to near inwhich I believe it is and the next minute my heart opens to him again. I believe he knows what he is doing. He is playing with my emotions and feelings. I know he does not care but I still allow him to come around and text me when he wants and see me when he wants. He wants to spend time with other women more than me and his guy friends more than me. I am 2nd best and I know it. I am so pathetic it hurts and I know I am. I am a very beautiful woman so it's not the fact that I am ugly on the outside or the inside. My friends tell me I am too good for him and they are most likely right. He keeps trying to let go and help me let go but I keep holding on. How do I stop being pathetic and let go? It has just gotten worst and worst and I don't see the sun coming out anytime soon. I have been in limbo with him for the last 8 or 9 months. The only continued period of happiness I have had with him were 21/2 months out of the last 11 months I have been hanging with him. I just want to breath again. It feels like he stole my heart and locked it up in a box somewhere and then comes to stab it when he gets bored. I am so tired of this but I am too scared to let him go for a sense of how much it would hurt. I should let you know throughout out those 11 months we are still "friends" as he says he doesn't want to hurt me by dating me or becoming exclusive because he knows he would because that is just who he is. I must add that he isn't using me for sex because we have never had sex because I am abstinent and I don't believe in sex before marriage. He has always said he was okay with that. It's not like I want to make him marry me or believe I am the one for him or his future wife so I am not trying to push him into anything.