Welcome to SR! I'm new here myself but I can tell you that you've just found a great group of people and this is a good first step.
Just think, you have 3months before your fiance moves. Use this time to head down the right path and sober up. I can gaurantee this will make your life, and hers so much better.
Your not alone, myself and many others on SR are just starting our like you, glad you joined us!