The story follows the 10th anniversary of Bo and Keung. In the ten years, the couple has gone through quite a number of ups and downs. After trying to develop his career in the mainland, Keung has returned to work in Hong Kong while Bo has stayed in Hong Kong to run a wedding consultancy firm. Bo firmly believes that love is forever and has witnessed over the years numerous sweet stories of love bearing fruits. However in private, the love between her and Keung has long turned bland. Keung wants to have children but Bo cannot care less. Once again, the couple is plunged into emotional ebb. Meanwhile, the betrayals years back begin to emerge again…

　　林嘉华（方力申 饰）和邝美宝（邓丽欣 饰）结婚十周年，决定到瑞士滑雪庆祝，但在出发前，华重遇几年前的老友琪琪（盛朗熙 饰），二人发觉对对方的情愫从未减退。那边，阿宝竟突然提出不去瑞士，而她对阿华原来也有一个不可告人的秘密。

故事跟隨阿寶(鄧麗欣飾)及強(方力申飾)結婚十周年，十年之間兩人經歷不多又不少感情風浪。強到內地發展又回到香港工作，寶留港經營婚禮顧問公司。深信愛情是天長地久的寶，多年來見證愛情開花結果的甜蜜故事，可是私底下她與強的感情早已由甜蜜變得淡如無味，強一心要生兒育女，但寶愛理不理，兩人再次陷入感情低谷，當年/現在的感情背叛又浮上面來…

《紀念日》（英語：Anniversary）是一部2015年的香港電影。由葉念琛執導，方力申、鄧麗欣主演。本片是葉念琛紀念拍攝《獨家試愛》十週年，故事上與《愛情四部曲》的第二部的《十分愛》並無關聯，與第一部《獨家試愛》及第三部的《我的最愛》有部分關聯，主演依然沿用方力申、鄧麗欣。該電影是方力申和鄧麗欣交往十週年之作。