I recently read two interesting articles about the pros and cons of people in a relationship sharing a bed at night to sleep.
I cannot do the "sleeping together" thing -- and it's nothing new. I think sleeping together or apart has no affect on my relationship with Matt. I get a good sleep; he gets a good sleep. Everyone's happy. (We do, however, share a bed when we take naps on weekends. Aawww.)
The articles are here and here.