Plz read and tell me If I have done the right thing.. I hurt my best friend..?

I feel it would be better if you talk to him. Hurting him was, in a way, a method to push away the subject. you were scared of losing him so you deliberately pushed him away before he did. If you want to remain friends it's best to share your feelings with him and hope he understands. If he is a good friend he will accept it and support you, as I'm sure you would.