Dumbass drama

My best fucking friend cheated on her boyfriend last night by making him leave and made out with a guy she knows broke my heart while I was in the other room. Do I have a right to be mad? Both about her cheating on her boyfriend and for doing it with a guy I’ve cried to her about

On top of that her boyfriend was hugging the guy she made out with before he left and saying that he trusted him and then they go and do that the minute he leaves

I was trying to fix things with the guy who broke my heart before but now I’m pissed off at him too and idk what to do

I loved both of them so much and now I feel crushed. They were my closest friends