My ex-boyfriend, whom I remain to be friends with, started dating my best friend. They broke up recently, and she has been feeling down, but didn't want to talk about it and I didn't want to pressure her. Then a few days ago, my ex-boyfriend asked me if I wanted to hang out with him because after all, we are friends, I accepted. After that, My best friend found out I went out with him and got super mad. So I have to know am I an asshole for going out with him? am I a bad friend?
I feel like I should clarify I do not have feelings for him anymore, and I am talking to this girl who I really like.