Is OTHER wrong in the post ? POST : Basically what it says in the title. I've been friends with this guy since high school, but I found out he's treated his gf (also my friend) horrifically. Cheating on her, emotionally abusing her, etc. He relied entirely on her financially too. She broke up with him last year and I found out about the abuse.

He also has a history of saying really misogynistic things to my other friends. And to top it all off, he started dating his best mate's ex (whom the guy was still in love with). That is over now, but he's trying to act like nothing happened. 

Will I be the asshole if I stop talking to this guy completely? 