Girlfriend broke up with me and itts evident she has started seeing someone else. I need help?

[Sian]

Hi GJA
its perfectly normal to feel like you dont want to be with anyone else after you have been hurt in a break up. It takes time.
The fact that she is out there dating other people sadly suggests that her feelings for you were not as strong as yours for her. It happens, and its sad when someone gets hurt.
But its better to find out early that someone is not right for you than waste too much of your life trying to make something work when one person is not happy.
Every failed relationship is one step closer to the one that is right for you.
As for whether she will come back? Well i think it would be better for you if she doesnt, but dont sit in your room waiting, get out there and date other women. You might make some good new friends even if you dont meet 'the one' and anyway, it will cheer you up!