Read my posting on What is like to Date an alcoholic. I can relate to your situation. My ex was fully functional, but the signs were there. Stand offish' Always tired; Selfish; Cranky; Hangover; Drinking again to kill the hangover; Loosing things; Forgetting conversations he had while he drank; Passing out; Not sleeping Well; No energy to work out; Drank Scotch every day; He never had a DIU, he got lucky he never got caught! I know one time he drove drunk and I took control and drove because he had no business driving. Yet, he was functional. On work on time. Paid all his bills. But he was self centered, Didnt call people back. Isolated himself because he was busy.....busy drinking!!! I am glad he broke off things with me. I am glad we didnt progress and got married. My fear of being alone and my desire to get married almost made me make a huge mistake and overlook the fact that he has a problem with alcohol