Bill: Instead of outright accusing her boy of bad behavior, subtly suggest that he might not be the dream dude she deserves. If she asks you to elaborate, just say you’ve heard some things that she should talk to her guy about. Hopefully, she’ll come to her own conclusions about him.

Dave: No matter how much your friend respects you, she’ll never dump this guy until the truth stares her in the face. You can ask her questions and hint around, but this is one sitch she needs to figure out for herself. Just make sure you’re there for her when the inevitable breakup happens.