I have major anger issues, and my boyfriend did something that totally crushed me so when we broke up, we still have these friends that are a couple in our group. My ex-boyfriend little sister slept with that girl and our friend group and we’re all friends with her.. I always said that when me and him split that I would tell her the truth, because she always said she would tell me if my boyfriend is doing something and that she would want someone to tell her if it is the other way around. So a friend of mine who they don’t know, spilled the guts.. should I tell him it got out because I told someone else?