I'm sorry you're having such a rough time with the holiday. When you say that your H probably had the time of his life, it's probably true that he did and that he is also now severely depressed.
Addicts (and most of the WAS's on these boards are addicts and not psychopaths) go through an addiction cycle. Taking their drug of choice (the OW in this case) produces a euphoria unlike anything in their normal experience. It's usually followed by a horrible guilt and depression. That cycle repeats itself again and again.
I expect him to be starting to get depressed today, whether he shows it to you or not.
The LORD is near to all who call on him, to all who call on him in truth." (Psalm 145:18)
