stop the hating and start the crying
on a more serious note, you should not hate her. Why would you even want to? Besides the point that the memories of her hurts and stings! No, my advice would be to be sorry and feel the pain. It will help you later in life, if you learn from it. Let the wounds close, and remember the scar for all the good things it brought to you.
As for getting her out of your head... It is hard and it is going to take time... One way of speeding up the process is by changing your life and your habbits.. Get some NEW imput in your life.. Do something that you always wanted to do, but just never did.. Go live a little, when you feel like you can manage the pain and the memories...
Best of luck
Feelings are powerful things - they override our minds and our bodies, as if trying to control us. We are but mere vessels for them to carry out their will.
Your Friend - Bjarke T.