do I have the right to hate him? what can I do to stop loving him?

okay, so theresthis boy that I love. fully, completely, more then a person should be capable… but I despise him too. Im falling apart because of him, no matter who I date or what I do or how happy I am I still cry over him. I feel pathetic. I cant move on I cant do anything else. I’ve known him for a long time. In 9th grade he was like one of my best guy friends. then one day he asked me out and I realized how much id loved him, but he never spent time with me or called me. or kissed me and he left me on valentines day, but we stayed friends. and then in 10th grade we dated again and he told me he loved me, but a week later he left me again… for a boy. and people started telling me he liked boys more then girls. then later the same year he told me it wasnt true and he still loved me he was just a little confused and then when I said I loved him back he suddenly started dating my friend since like… kinder, and STILL. STILL I stayed his friend and then at the begin of this, my eleventh year, he asked me again and I said I didnt know because hes hurt me so much and he told me that he truly loved me and that I was his life, but even though I knew he was full of crap I couldnt find it in me to turn away and I went out with him again. then I dumped him because a month later I found out he was gonna leave me because he liked my best friend in the whole world/sister that I’ve always felt insecure compared to. and so I drew the final line and stopped talking to him, and he for some reason HATES ME! why! I dont even know. after everything hes done to me he hates me, but I also know its my own fault for being so weak. do I even have the right to hate him? I mean its not his fault im in ove with him, but of all the people in the school there are 2,000 people. why did he have to try and leave me for her… whyd he have to lead me on. now hes almost completely gay, but I love him so much… it hurts so much. im with another guy and he makes me happy but I feel guilty cause the one who hurt me will always be torturing me inside and will always have my heart. what else can I possibly do to make him go away??