about friends?

[koh.nancy]

ok i have some problems at skool. kk one of my best friends and i get in fights mostly these days and its pissing me off soo much. i sat on her chair and wouldnt get off and i made fun of her but just for a joke like,haha you got water on your nipples and haha you have braces" but i was just joking right? and she fucking lifted up the chair that i was sitting in, and i fell on the ground and banged my head on the desk and it hurt soo much you wouldnt even know. and she didnt even say sorry. im still mad at her and i will never forget it. and i wrote fuck you pearl on the blackboard and then one of this really annoying boy told her that and she got mad at me. what do i do? i still remain friends with her but she pisses me off so much. and my other friends doesnt seem fun and as that nicee as they used to before,,,,