My sister is staying with me at the moment due to her dh being an utterly disgusting, lying, cheating, sex pervert pig. I posted about the whole sorry affair on relationships. Anyway my tolerance is low right now and I’ve just lost my shit with my best friend of 20 years. She has been sleeping with this married guy for six months (she’s married too) and he is clearly using her for sex and treating her terribly but she keeps going back for more. She came over today crying about how hurt she is as he is ignoring her currently and I went batshit, called her a selfish bastard and asked her to leave. I don’t want to see her again. His wife is pregnant with their third child and I can’t associate myself with someone who has the morals of a fucking sewer rat.