I(22fm) don't usually get along with my mother (47fm) and when I do it's because I walk eggshells around her .Not entirely her fault but I stopped saying things that were not okay with me even though they still aren't so we wouldn't fight and she wouldn't threaten me with throwing me on the streets,the last time we had a big fight was last year,so truly I've behaved .Now I know she's cheated on my father(50m) and that I have the receipts and truly I know he doesn't know this .I have held this info for about 5 years and it's an ongoing thing.My question is if I'll be the asshole if I use this the next time she hurts me ,I'm on holiday for about two months at home and already I can tell it's going to be tough. I just really need to know so that I don't end up regretting it