I've experienced the nighttime crazies. It goes something like this:
I work full time, exABF didn't. I'd go to bed at 10-10:30ish, exABF would be passed out on the couch with the TV blaring.
At 2-4am exABF would come to bed, wake me up and ask why I was asleep. My response: I need my sleep so I can work tomorrow.
Then exABF would insist on playing with his laptop while in bed or putting the TV on in the background 'to help him sleep'. So I'd be left with the light glow and buzzing of different electrical appliances all night. And when I'd ask for them to be turned off, 'I didn't understand'.
Crazy crazy routine.