You have to learn to not take things he says personally. Try and think of it this way. He knows there's something he has to work through and he has to do it alone but he doesn't know why. He feels like you're pressuring him (not saying you are but in his mind you are) so he will say things to you he knows may hurt you so you will leave him alone. The best thing for both of you right now is to give him time and space. The friendship will come. You have to have the faith that it will come. In my situation, my wife wanted nothing to do with me for months. Now just recently she has told me that she sees me as one of her best friends.
She didn't want anything from me, but I treated her as a friend anytime I had the opportunity to interact with her.
