i think this web might be helpful for you, my boyf did the same thing like how ur ex did. he's actually cant get rid of you from his life, the only way to completely get rid you from his heart is by choosing to be friends. Ive been trying ways which was waste of time till i found this page. its very helpful, my advice is try to play your role too! you HAVE to be playing hard to get, try to be one in a million. He'll someday realise how really stupid he is by letting go a very wonderful girl like you trust me, honey.

http://www.get-back-your-ex-boyfriend.com/ex-boyfriend-dating-someone-else.php

http://www.get-back-your-ex-boyfriend.com/make-ex-boyfriend-miss-you.php

there are two webs, both are helpful.