Hi Swampy
Welcome to SR. Glad you found us.
I can understand that you are really hurting right now. You can call me an eternal optimist, but I firmly believe that good can come from all bad situations. Firstly you're getting sober..for you! THAT'S BRILLIANT. Secondly, you're feeling emotions and not numbing them with your D.O.C. THAT'S BRILLIANT TOO.
Detaching from your g/f is tough for you I know, but it's all up from here. To truly love someone you need to work at it (and that goes for people in a relationship), but if you were still drinking, you can only work at it when you feel like it, or when the booze allows you.
You're making your own choices now and the longer you choose to stay sober the more of a complete person you will become. Once you start to rebuild your self esteem, you can have a much more positive outlook on your own life and your actions will have a positive impact on those you love.
The best things in life are worth fighting for. Sobriety and genuine love are right up there.
I hope you can work things out.
Rich