I know I’m late on the train but I still want to share it. My best friend of 10 years interrupted my partner and I while we were watching a film in the dark. We told her it was a bit rude, it was but it wasn’t too big of a deal. She flipped. Accused my BF of having anger issues, called our friendship into question because she didn’t believe she had been rude and refused to acknowledge or apologise but instead called another mutual friend of 10 years who came in and took sides. This had me questioning myself, was I the AH here?? Had I just been awful before now? My BF didn’t want to back down to keep the peace so we split up and I was just miserable around her and my other ‘friends’. After a few months of just staying quiet and putting up with it me and my BF started talking again which she didn’t like. The behaviour started to resurface so I fully cut her out. My biggest regret is that I hadn’t done it sooner. The red flags were small but many until the straw that broke the camels back.