How do you get your girlfriend back you loved her so much you are willing to do anything to get her back?

If she is not interested at this point, the best thing for you to do is to move on. That is because it takes two people to make a relationship. Also, it is a bad idea for you to do whatever you have to if it involves not being yourself or attempting to buy love. Just is not going to bring the results that you want. There are plenty of fish in the sea.