Is OTHER wrong in the post ? POST : So back story, me and this girl (Let’s call her Sarah) have been friends for 4 years and have decided to enter a private FWB 6 months ago.  We made it pretty clear that the only condition to be kept was the secrecy of the relationship since we are students involved in a small high school program.  A while back I found out Sarah told a close friend of hers when we were looking through her texts together and she admitted everything we have done to her friend.  At first she tried to say it was a joke, but after some crying to admitted that she did in fact tell him everything. I got upset and really angry, essentially I told her to give me time to calm down and decide if we should still continue even being friends.  Everyone advised me to just suck it up and let it be, so I decided to just that. So my question is, AITA for reacting the way I did? Judge me to hell im pretty sure I can take it since it’s resolved. I still feel very uneasy about the situation and I need some outsider perspective.