《爱的回旋曲》（又译《美丽单相思》）是富士电视台于1990年10月15日至同年12月17日间每周一21:00至21:54 播出的电视连续剧，共10集。2009年12月2日这部电视剧作为富士电视台50周年纪念DVD中“中山美穗恋爱剧集合”的一部分被收录在DVD-BOX中发行。该剧由中山美穂和柳叶敏郎主演，是野岛伸司的第三部连续剧作品。它与纯爱三部曲的后两部相比人气略显不足，但平均收视率也达21.8%，最后一集收视率达到26.0%也在当时创造了记录。
爱的回旋曲 (季节 1)
Episode 1 0.0
播出日期: 1990-10-15
运行时间: 47 min
概述: One morning on the train, Shunpei points out that Keiko's slip is showing. A coworker gives her his number. Keiko calls. The two hit it off, and make plans to meet. Keiko recognizes Shunpei from the train, and embarrassed, hides from him.
Episode 2 0.0
播出日期: 1990-10-22
运行时间: 47 min
概述: Keiko's friend Taeko rents a movie. Taeko takes it to Shunpei's apartment, hoping to become his girl. The 4 go out where Keiko ends up with Yutaka's transit pass. Keiko calls Shunpei. He recognizes her as 'Nana,' and they talk.
Episode 3 0.0
播出日期: 1990-10-29
运行时间: 47 min
概述: Taeko enlists Keiko's aid to cook a surprise birthday dinner for Shunpei. Shunpei confides in 'Nana' that he quit his last job because of his ex.
Episode 4 0.0
播出日期: 1990-11-05
运行时间: 47 min
概述: Keiko sees Taeko kiss Shunpei. Shunpei asks 'Nana' for a photo, but she sends him someone else's. Shunpei dumps Taeko. Shunpei invites Nana to a movie, but Keiko doesn't tell him.
Episode 5 0.0
播出日期: 1990-11-12
运行时间: 47 min
概述: Shunpei catches a cold, and phones 'Nana' to come take care of him. Keiko goes, but the next morning Taeko discovers her there, and yells at her.
Episode 6 0.0
播出日期: 1990-11-19
运行时间: 54 min
概述: Nana, unhappy to be fighting with Taeko, asks Yutaka to help her make up. Keiko and Yutaka meet at a bar. Shumpei shows up, and then Taeko comes, and sees Keiko and Shumpei together. She hesitates, but eventually joins. Keiko and Taeko fight, so the boys suggest they go outside. Keiko finally gets through to Taeko. She says she is going to tell Shumpei about "Nana."
Episode 7 0.0
播出日期: 1990-11-26
运行时间: 54 min
概述: Yutaka asks Keiko to be his girlfriend. She doesn't answer, but tells Taeko who says "You'll refuse, right?" That night, Shumpei shows up at Keiko's door, bringing her potatoes his mom sent him. Shumpei asks about Yutaka. Jumpei runs an event for work at the beach. Keiko and Yutaka show up. Keiko wonders if there is something between Shumpei and his coworker Ikumi.
Episode 8 0.0
播出日期: 1990-12-03
运行时间: 54 min
概述: Keiko and Yutaka start dating. Junpei gets an offer from his old company. It looks as if Shumpei will move out, and Yutaka will move in. Shumpei calls "Nana," and tells her there is a woman he is interested in, but thinks she doesn't like him. Nana(Keiko) asks "Who?" and Shumpei says "Keiko Yoda," not realizing Nana is Keiko.
Episode 9 0.0
播出日期: 1990-12-10
运行时间: 54 min
概述: Nana intends to break things off with Yutaka, but can't bring herself to do it. He kisses her. Yutaka goes drinking with Shumpei telling him about the kiss, but confesses he is worried she likes someone else. Taeko tells Yutaka that Shumpei is the one Keiko likes. Keiko and Shumpei meet. He tells her to do right by Yutaka, but she finally gets the courage to tell Shumpei he is the one she likes!
Episode 10 0.0
播出日期: 1990-12-17
运行时间: 54 min
概述: Shumpei tells Keiko to stay with Yutaka, denying liking her. Keiko is convinced he is moving, and spends Christmas eve alone. Later, Shumpei thinks about it some more, and finally realizes that 'Nana' from the phone and Keiko are one and the same. He finds her. "I thought you moved?" "Just next door." Finally, he confesses that it was her he'd loved all along.
季
集 10