My friend turned into an a**hole and im tired of the way he treats me now what to do? please help?

I have the same problem !!!!!!!!!! god i know how **** it feels to have sucha an h*le around u ! but i somehow figured it out and we are friends now. we talked on facebook and i told him that im f*ckin sick of him and if he wont be like he was before then he can watch me leave. and so he said that he doesnt want me to leave and suggested we will be normal friends without calling each other names and all that. sometimes we call each other names but only like in a joke way. :) hope that somehow it helps ! and i wish u best of luck !!!!! :)