There still might be hope. but it won't be easy. but it is possible.
you basically need to the be man you know you can be. be that man and she'll see it and be drawn back to you.
one of the best books i've read that may help is this
http://www.amazon.com/Way-Superior-Man-Spiritual-Challenges/dp/1591792 576/
it will either help get her back, or help you attract a girl that is right for you






