Hi and Welcome,
I think that denial in alcoholism is huge. When I look back at how my life was crazy for three years of drinking, I can't believe how I rationalized it away. I can say that for me, I would not have been able to stay sober in the early days, if I was living with someone who was drinking a lot.
And, remember that alcoholism is a progressive disease, so if you're fortunate enough to have not suffered much yet, that probably will not last. I'm glad you found us!