I’ve been in a situation before, loved my ex to death but I started hanging out with another guy I never did anything with him and my intentions weren’t bad but I started to like the other guy and i always thought maybe if my boyfriend had a pair of balls he would say something to me about it, you really need to show that you care and you don’t want her hanging around him because its not going to turn out good, and if she says she’s not gonna stop then its probably time to leave her…there’s just lines that you don’t cross. she shouldn’t be sleeping out at his house …and u didn’t ditch her by the way you had a family emergency and she as your girlfriend should understand that