Psycho Ex-...

I really wouldn't get in the middle of something like that. Maybe she is the crazy one, maybe she is using you to make him jealous, maybe they do this all the time, maybe she called him over about the time she knew you were going to be there.... maybe....

If he is stalking her and harassing her, she needs to call the police and/or get a restraining order. Until she does that... there are alot of maybes and I wouldn't get involved. Definitely stay clear of someone in an emotional state of mind, people get killed all the time from getting in some ******** like that.