When I met my wife 20 years ago or so, I told her that I slept nude, even if I was sharing a hotel room, staying on a friend's couch, etc. She responded by saying she would never, ever sleep nude. She thought it seemed weird.
Four whole nights later, I convinced her to sleep nude with me. Long story short, she has slept nude every night since then for the next 20 or so years!
Even when we are on trips with people, she goes to bed in pjs and will usually wake up topless without realizing she took her top off in her sleep. She has woken up wondering if others in the hotel room or cabin with us had seen anything while she slept in later than everyone else.
Lately, she thinks it's weird that anyone would go to bed with anything on at all.