Ex will propably fade out, I have known some who were obsessed with their frrst, this may take time. If nothing else, get a restraining order
He will have to man up and tell her it is over and there is nothing left he is allowing this to go on, but if he tells her like he means it and don't respond to her calls, letters, advances etc. She should get the message if not go for a restraining order ...the best to you
Depends on ~how~ crazy his ex is. Restraining orders are just a thin sheet of paper. I would carry something like a taser or pocket knife to defend myself. These dumb b*tches today will go to any lengths of degrading themselves to get back with their men or get back at their men. The man has got to put his foot down and some way or another. Sorry, I've tried but I can't get any less direct then that.
Just tell him that his ex has got aids
Not sure about the entire situation. But how much time do you'll spend together? Is it possible that they are in fact living together?