Why can't it just be over?

I want so badly for him to be out of my life. I just can't deal with his bull shit emotionally. All he does is hurts me but I'm not the type of person to say no so what can I do when he says he needs my friendship, that everyone has left him I'm all he has left and he doesn't even realize that doesn't even have me? I want nothing to do with him I want so badly for him to fade into my past. It's not the I hate him I don't I just cant deal with it anymore I've wasted almost three years on his bullshit and it's left me with nothing but a bad taste in my mouth there is so much bad it's hard to remember the good. -_-