- Country: South Korea
- Genres: Drama, Romance
- Release: 1998-10-03
- Director: Je-yong Lee
- Writers: Dae-woo Kim , Je-yong Lee
- Language: Korean
- Stars: Jung-jae Lee , Jung-jae Lee , Mi-sook Lee , Mi-sook Lee , Min Kim , Min Kim , Young-chang Song , Young-chang Song , Kyung Soon Jung , Myeong-su Choi , Woo-hyeok Choi , Yeong-Soo Choi , Joo-Eun Kwak , Kim Min-yeong
- Runtime: 108 min
- Awards: 2 wins & 6 nominations
- AKA: Jung sa (Korea) , Eine Affäre (Germany) , Bir Yasak İlişki (Turkey) , Um Caso (Brazil) , Jung sa , Jung sa (India) , 情事 an affair (Japan) , Jung Sa (Singapore) , Une liaison (France, French Republic) , An Affair
- Plot:
A middle-aged woman has an affair with her much younger sister’s fiancé.
- IMDB:tt0239510
An Affair Cast · · · ALL
Je-yong Lee
Director
Mi-sook Lee
Seo-hyun
Jung-jae Lee
Woo In
Young-chang Song
Jun-Il
Kyung Soon Jung
Kwan-ho's Mom