I have a system for sleeping.
I get ready for bed, and then I read for a while. When I get v-e-r-y sleepy, I roll over and Len scratches my back mindlessly while he reads. To make this even cuter, our cat has learned to jump on the bed and head-butt my hand until I scratch her back while Len scratches mine.
The cat and I fall asleep.
After a while Len also gets sleepy, turns off his light, and crumples into his side of the bed. He sighs and then breathes slower and slower until he is asleep.