One of the realities you need to face is, this may be who he really is – withdrawn. So much of their character traits and personality we blame away on the drinking or them getting sober or them struggling with recovery when often it is just who they are.
A long distance relationship is difficult in itself let alone with someone in early recovery. And yes 2 years can be considered early recovery especially seeing that their recovery will be lifelong.
Maybe try and look for an al-anon meeting in your new area. It will help you meet new people and it will help you make new discoveries regarding alcoholism.