I've been in this same scnario with friends who had shitty girlfriends, and you can't tell them 'hey that bitch is crazy she's going to fuck up your life' or you're the asshole, and then you have a falling out and you stop hanging with that guy and a few months later you run into him and he's not with her anymore and he's like "yeah man you were right that bitch was crazy and she fucked up my life"