I'm not going to get back with my ex-girlfriend after she dumped me for getting a DUI.
Why would you not want to go back to her?
I hate her and because she is a fucking backstabber. Why would I want to go back to someone like that?
It is important to be in a relationship only with people who will be supportive and there for you in your time of need. While driving under the influence is not right, it also wasn't right for your ex-girlfriend to have left you without first trying to get you help for your excessive drinking. It's okay to not want to get back with someone who isn't supportive.
You're right. I'm not going back to her because she's so unsupportive.
That's a good idea. You should look for someone who will be supportive in the future.