Why would you want to be with someone who doesn't want to be with you because you DON'T drink?
If you ask me, you should be thankful that this happened today instead of weeks, months, or years down the road.
Of course this hurts, and it's going to hurt for awhile. Feel the pain, go through the grieving process.
In the end, though, this is one of the best things that could happen to you. This is a person you needed to remove from your life, and she did all the work for you.
Now, go out and get some ice cream and celebrate being free!