How important is being able to comfortably sleep together in a relationship? This is a make it or break it part of a relationship for me. It's a milestone in a relationship towards the serious. If I can't sleep with someone comfortably the relationship usually does not last. I sleep in a queen size bed and I am a spooner. Whoever I sleep with needs to feel good when we sleep together. Hands on bellies, legs intertwined, cuddling, snuggling, grabbing cock from behind all are part of sleeping together. We need to be sleep compatible. I favor partners a little smaller than me because I like to be the outside spoon and it just feels better that way and partners with a little meat on them because they just feel better I've found.