I have been in a relationship with a man who has a live-in girlfriend. I broke things off for about 3 months. He refuses to give up. I have been trying to live a normal life without having to be the other woman. Last week, he placed his mother's ring on my finger and told me that he is willing to do whatever it takes to get me back. He plays family when his son comes around but he says that they are not together when his son is not around. What do I do?