Ok heres my take on it.
1. Ask his friends why they avoid you.
2. Find out if he did this to make you mad.If so ignore him for good.
3. Find out what the other girl thinks.
4. Find a New Person if you really want to leave him and leave him if he is doing this to make you mad.
5. Live a happy life.
(By the way look at my wish, if you wish the same copy it into your sig)