Is your partner on a very different sleep cycle from yours, due to either work or choice? Are you ships passing in the night?

Yes! He will fall asleep on the couch a couple of times during the day. Maybe in the evening. Then he is still up at 3 4 5 or 6 a.m.! Then sleeps in till after noon if he has nothing on his schedule.@SW-User

Me, my inclination is to go to bed anytime between 10 or midnight, but sometimes I stay up until 2 just because he is up.