Im going to assume here that she had a pretty good reason to break up with you (most girls do when they break up). Because of that Im going to say that its not worth trying to work things out. Girls come and girls go, there will be more, there will be better. Its not worth another breakup with the same chick. I honestly doubt even if you do get back together that you' ll be together for the rest of your lives. So, I say move on.

Don' t sweat it. Find another and move on. Besides there is no better way to get a girl back then to have her see you with another girl. There are more fish in the sea than just that one.