Do you and your significant other go to bed together?
Probably 2-4 days a week, my FI goes to bed a solid 3-4 hours after me. I'm an early riser so I'm usually in bed around 11 or falling asleep on the couch by then. If he still has work to do, which is often, he will come kiss me goodnight, snuggle for a minute and then go work until 2 or 3 am.