Thank you both so much for your thoughts. I have come to recognize that his cancer diagnosis has really triggered some co-dependent behaviors on my part. I'm scared to lose him. But being scared isn't going to help me or him. Being honest is... and this hurts! Whatever it is... the addiction, the cancer, the drugs or his honest feelings... it hurts. I need to get past this sadness, and I am working on it. Al-Anon and these message boards help. Thank you all.
I'm about to watch '127 Hours' for some perspective on how desperate life can really be.