Well - here is the deal. You broke up with him - he is HURT bad. Now he has this other gal. Unfortunately, if he wanted to get back together he WOULD jump through hoops to do it.
Give him time. Although, be careful - I have a feeling he is playing you.
Read these articles about love, relationships, getting your lover back...
www.lovetactics.com
There are several things you need to do to get him back.