剧情：本剧改编自Marco Missiroli的同名畅销小说。 　　这是一个关于爱与背叛的故事，讲述一对三十多岁的中产阶级夫妻，当他们开始对其他人产生欲望，两人的性关系开始变得紧张。 Fidelity tells a story of marital fidelity, in particular the one of Carlo and Margherita, a young couple who needs to face the deflagrant consequences of an alleged betrayal. Their relationship becomes a symbol of fidelity, not only as a couple, but also in the personal choices made every day.