So I’m friends with these two people who are in a relationship but on Wednesday he cheated on her with my ex best friend. He lied about it until we found evidence (screenshots) about it. He initiated it but she didn’t exactly push him away and she was aware that he was dating someone. Everyone at school hates him and the girl he used to cheat on my friend. But my ex best friend is depressed and she has an eating disorder and she’s got no friends now. Do you think they are both in the wrong or mainly him or mainly her?