When your girlfriend leaves, it is easy to sit around and feel sorry for yourself but by working out an action plan to get her back, life becomes easier. Positive action and thinking of solutions makes you feel better quickly.
I am sure that is what you want. Here are some positive steps you can take back.
Go back to the gym. Unless that was the reason you broke up because you were already spending too much time at the gym. Going to the gym works wonders for you, after a great workout you feel and look good. They are not kidding when they say a good workout gives you a natural high. You don't need to become a body builder, but your girlfriend is certainly going to notice a new toned you. And she will like the idea of going out with the new you
Go out there and be sociable, get with a new group so you are not with her crowd. She is going to be told by well meaning friends little snippets of what you are doing. Curiosity is powerful and she will want to know more. Instead of you hanging around her and being dismissed you are now in her thoughts and she is wondering what you are up to.
Now is the time to accept responsibility, for your part in the breakup. This is a big step. Tell her how you feel and that you would like a second chance. Just explain the situation and leave the ball in her court. The last thing you want to do at this stage is beg.
If you follow these tips, you have created a positive non-threatening situation for her to contact you and see where you go from there.