What is something surprising you learned about your SO after years of being together?

I have been with my husband for 20 years and yesterday I found out that as a teenager he went to bed around 8:00 at night. Our entire marriage I have been annoyed that he was willing to go to bed very early and wake up early. I am a night person, and I always thought he did it because his job demanded it, and the last few years he gets up at 5:00am to go to the gym before work. I hate it. I hate that if we go out on a Saturday night he is exhausted before we ever leave. I hate that typically by 9:00pm he is dying of sleepiness, desperate to get into the bed.

Yesterday it was 7:30 and he said, “it’s time to go to sleep.” Huh? At first I giggled and said, “It’s 7:30?!” But, he was dead serious. That’s when I thought to ask him if that seems normal to him. See, if he was just catching up on sleep, and needed to go to bed very early one night or take a nap in the middle of the day I am totally good with it. But, to learn he thinks it is normal to go to sleep at 8:00 at night? I think all these years I have projected onto him, rather know this reality about him.