My ex and I broke up a month ago but we remained good friends, but his best friend told me that he is extremely pissed off at me and has been before we broke up. My ex is a very kind guy so he never expressed his anger to me and acted like nothing happened. Apparently, he is mad because he found out that whenever he upset me, I told my friends about it. I vent my feelings and told them how he wouldn't text me, talk to me, wave hi at me, etc (not enough attention). Yes, it felt a bit wrong to do this but I wasn't calling him trashy names. When he does good stuff to me, I tell my friends about it too. Anyway, my ex said I said "nasty stuff" about him and that it was "the last straw." I've never seen him mad, and I still have some feelings for him. I bawled when I found out he was angry at me. His best friend said I should apologize, but should I? Have I really done something wrong? Was it wrong to vent my feelings when I was upset? Of course I talked to him when I was upset but he never fixed those issues which was why we broke up. Please help?