So I have a very mentally abusive manipulative ex of 2 years that told me to kill my self multiple times and completely made me self destruct I mean since the break up I was admitted into hospital multiple times he caused me severe depression and anxiety and couldn’t eat

Now my best friend seen all the ins and outs heard him yelling at me and everything now they knew each other not even close because my best friends dads car broke down and my ex fixed it a few years ago so that’s how they know each other but still were never close

Worst part is I warned her and my ex said that he wants to fuck her to get back at me and with her knowing that and still choosing to go clubbing with him and everything

Am I in the wrong for absolutely hating her ?