Something's wrong with me. What do you think I should do about it?

Hi guys, I am going through a break up... I know what people will say: move on, things happen for a reason, get over him etc. Just that I dated a boy for eight months, started off well but headed to a rocky relationship, and ended on the last day of school. I think I hold a lot of things against him, but I am attached to him. I feel that he could have prevented me from getting attached, but now I feel betrayed and I can't seem to handle injustice well. I find myself in wrath and envy with the fact that he seems so calm with the situation. I'm telling him to keep ignoring me and hopefully one day he blocks me, and I think he is still ignoring me. We have discussed it before, but something he says doesn't make sense. I can't bring myself to closure. It makes it feel that I am harassing him. I am aware of everything I say and do, but I cannot help it. I don't think I have self control at all, and I need help. What do you think I should do about it?