Is AUTHOR wrong in the post ? POST : So there's this really annoying guy who I hate with a burning passion. It started with him asking me to draw this girl realistically I said sure and I drew her. It turned out good but this guy accidentally ruins it with ink or whatever the fuck I dunno he just asked me to redraw it. Oh wait, sorry, he didn't ask me to redraw it he demanded it. obviously the drawing took a lot of time the first time and it was exam week so I declined. He pestered me over and over again even during the exams. At that point I was of course, pissed. But during the exams I declined again and he told me that my art was shit and it wasn't even professional level. Now, my art ain't professional level that's for sure but my art ain't shit. Art is literally the only thing that made me want to continue living and not kill myself and him shitting on it really made me hate him. I just ignored him but he continued insulting  me and naturally I insulted him back. 

My friend is friends with this guy. I wasn't originally part of this guy's class and I only got moved there due to our class being dissolved and divided put into different sections. Me and my friend were friends before we were in this guy's class. Since my friend became friends with this guy she knew what was happening. But she asked me why I was so mad at him when he's such a nice guy. She was also told many times by this guy to stop talking with me and everytime we were in a conversation he intervened. This guy was also dissing me to my friend. I was so obviously getting worked up by this guy's insults to the point that I wanted to cry but she still thought that he was a nice, funny guy. I kinda lashed out at her ignoring her and being a bitch.

AITA for basically being a bitch towards my friend if the one I'm really mad at is her friend?