That sounds like a bad riddle, right? Like one I heard on NPR last week: What goes up a hill and down a hill but doesn’t move? The answer to that one is a road. And the answer to what subtracts more than it adds is sex.
Here’s the disturbing—but not, when I think about it, surprising—statistic I ran across this week, courtesy of colleague Sheryl A. Kingsberg, a PhD and chief of the Division of Behavioral Medicine at the University Hospitals Case Medical Center: “When sex is good, it adds 15 to 20 percent additional value to a relationship. When sex is bad or nonexistent, it plays in inordinately powerful role draining the relationship of positive value—about 50 to 70 percent!” I was so struck by that statistical picture, I’m on the trail of the original research to understand more. But in the meantime, what I know from other studies—and my own experience and conversations with women—suggests that’s about right.
Let me first say that good sex doesn’t automatically make a relationship good. And a good, loving relationship doesn’t automatically mean that the sex will be good. But if I think back to a study done a couple of years ago, “The Components of Optimal Sexuality,” I’m reminded of how many of the characteristics of good sex are also characteristics of good relationships. I won’t revisit the whole list, because you can read the series of detailed blog posts we did on each of the components. But here are just a few that come to mind in this context: