Sex is an attachment behavior, reinforcing the social bond between adults. Sometimes it takes the form of passionate, joyful sex between people who are falling in love with each other. Sometimes it takes the form of desperate, grasping sex between people whose attachment is threatened. Counterintuitively, when attachment is at its most secure and stable—when your relationship is all satisfaction and no worry or “plot”—it can take a backseat in your sexual arousability.
