Rosamunde Pilcher: Lizenz zum Seitensprung(2016)

Overview:

Oscar and Elle have been married for 25 years and, in the eyes of their daughter Lexie, they have the perfect marriage. But appearances are deceiving Oscar and Elle have lost the desire of the past. It will be his friend Oscar who will propose a solution that will revive their relationship: allow themselves a betrayal without affecting the feelings they have for each other.