I'm not even sure if it's a BPD thing but yeah, if someone is really happy (especially for no reason or if I don't know why) it makes me angry. I think like how are they this happy? Surely they are just pretending and aren't actually that happy, it's not possible. Even positive people well overly positive people trigger me, it's like the same kind of reaction I get when I hear people chew loudly with their mouth open or dishes clanging around lmao. I don't like that it triggers me btw.