The next time you get into bed with your partner – take a ruler.

If you share a bed, the distance between you and your partner could be revealing, according to a recent study. 

Of the 500 participating couples, those who reported they slept touching each other also reported happier relationships than those who didn’t. And it seems the farther apart the couples slept, the less satisfied they were apt to be in their relationship. 

Richard Wiseman, a psychologist at the University of Hertfordshire in England says it’s worth noting that distance in bed. If that gap is increasing, it could suggest the quality of the relationship is weakening. 

The study also found that 42 percent of the couples surveyed sleep back-to-back, while 31 percent sleep facing in the same direction. Just 4 percent say they sleep facing each other. 12 percent of the couples sleet less than an inch apart and 2 percent measured that gap at 30 inches or more.