Feelings of trust and attachment are fostered by the chemical oxytocin. In a study conducted at the University of Zurich, couples who used a nasal spray containing oxytocin before discussing an ongoing marital conflict were more likely to engage in friendly, positive communication than those who didn’t take a whiff. You can stimulate oxytocin naturally with touch. Hold hands while you watch TV, trade massages, or sleep in each other’s arms.

Read more about how oxytocin can act as aphrodisiac to desire here.