Re: Dean + open (before the Incident with Gabe)
It actually made more sense that it was harder to control in his own house. The environment was made to be comforting. The drinks were there and not controlled by someone else pouring or serving. Holidays were difficult times for alcoholics. That was just the way of things.
"You're doing well," he said, because even if Dean was tempted, he still hadn't partaken and that took a lot of willpower, Lucifer imagined. It was always best to give proper compliments and rewards during times like these.