Chemistry.

You are constantly in physical contact. This is not only about sex, but also about hugs, kisses, strokes, even the most harmless ones and in front of the public. You do not miss the moment to once again hold hands, comb your partner's hair with your fingers, stroke your knee in a car while shifting gears, etc. Coming home after a day's work, you urgently need a kiss and a touch from your loved one - scientists say that it even helps to relieve stress. All these actions are manifestations of an invisible connection between you, one that in the modern world of relationships is called chemistry.