Most Helpful Guy
This is entirely unfair, but unfortunately, very common. Selfish people tend to get away with their selfishness, often at the expense of the selfless. He's not going to feel remorse. He might not be that capable of it. Selfish people usually aren't. Unless you become as selfish as he is and wrong him out of selfishness, you can't really hurt him the way he hurt you.
Because he got away with hurting you, you can't let go of this. Because you can't let go of this, he continues to have power over you and continues to hurt you without even knowing it. At least I hope he doesn't know that he has the power of you! You have to give it up. You have to give up the unfairness of it and the wrongness of it and let the hurt, anger and hate go. Be thoroughly grateful that he is out of your life! This is a good thing not a bad one. It should be a source of relief to you and a motivation to find someone who will treat you right instead of the way he treated you and he will treat whatever girls flock to him.