I've seen people get back together after months and sometimes years. It takes time and patience just be suave you and see other girls. Eventually it'll kick in that she wants you for herself. Ofcourse there's always a chance that she just doesn't see you and her in a relationship anymore (very slim chance unless you're needy and play it wrong, be a man even in a relationship). In that latter case just cast your net some where else and find a new better girl. If you have the emotional and self control you can keep fucking her while finding someone else. But that all depends on you, mate.

P.S. I reccomend you don't get back with her unless you have built that durable and stable inner self. If not, You'll just be going back to where you started and eventually break up again.