Why do people change? That does compel to lead them the second families, secret bank accounts, to develop the difficult charts of conduct of double life?Esther Перель, practicing psychotherapist, during ten years worked with hundreds of pairs that ran into infidelity. Her book is this all-round research of desire arising up at a look to the side.Interlacing the real histories of the patients with sharp psychological and by a cultural analysis, Esther Перель offers to the readers from a new side to give a glance on marriage in the XXI century, fix the relations, do their more honest.