He has fooled me before - sort of, meaning I knew he was drinking, just couldn't figure out how. I used to search for the proof before confronting him with my suspicions, but he got better at hiding the proof. Now, I let him know immediately that I know he's been drinking, and then ignore him the rest of the night (and often for days later). His personality is so dramatically different after even a few drinks that he can't really hide the drinking even if I don't find evidence or pull out the breathalyzer.
I know I can't babysit him forever - but on the off chance that he does view this as a way of getting through the cravings (and he doesn't have a backup plan to drink), do the cravings get better after a few weeks or months such that his will power is better able to overcome? Or does it ever?