Movies Like Affair: wife's younger sister

If you liked Affair: wife's younger sister (2018), a drama movie, here are 19 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
High Society (2018)
★ 6/10Also drama
The story of the journey of married couple up the social latter. The husband is professor at Seoul National University who is running for the National Assembly, and his wife is a painter.
2
The Day a Pig Fell Into the Well (1996)
★ 6.3/10Also drama
The lives of 4 interconnected South Koreans – a married couple, a novelist the wife is having an affair with, and a second woman the novelist is simultaneously involved with.
3
Serve the People (2022)
★ 6.5/10Also drama
Mu-kwang volunteers to be a kitchen police of Sa-taek, the divisional commander, dreaming of success. One day, Mu-kwang meets Su-ryeon by chance, who is a young and beautiful wife of the commander. Soon, he feels a…
4
The Young One (1960)
★ 7/10Also drama
A jazz musician seeks refuge from a lynch mob on a remote island, where he meets a hostile game warden and the young object of his attentions.
5
The Nest (2020)
★ 6.1/10Also drama
Rory is an ambitious entrepreneur who brings his American wife and kids to his native country, England, to explore new business opportunities. After abandoning the sanctuary of their safe American suburban…
6
The Concubine (2012)
★ 5.8/10Also drama
A tragic love triangle story between Hwa-yeon, a daughter of a nobleman, her true love Kwon-yoo, a servant and the man who will be King, Prince Sung-won.
7
Brotherly Love (2015)
★ 7/10Also drama
West Philadelphia basketball star Sergio Taylor deals with the pressures of fame while his brother and sister have their own issues with ambition.
8
Everyone Is There (2020)
★ 8.1/10Also drama
Soo Yeon decides to commit suicide to end the bullying she goes through at school, when a savior appears. A woman punishes the bullies on behalf of Soo Yeon and saves her from the reality of hell.
9
Girl in the Box (2016)
★ 6.7/10Also drama
The true story of 20-year-old Colleen Stan, a hitchhiking woman abducted by a young couple and held captive for seven years, during which time she's tortured and forced to live as a slave to her captors.
10
Miracle: Letters to the President (2021)
★ 7.4/10Also drama
Dreaming of making a way station for his sister and the villagers who have no choice but to commute along the dangerous train tracks every day, Joon-kyung sends many letters to the President, but with no reply. Ra-hee…
11
Birdcage Inn (1998)
★ 6.4/10Also drama
Jin-a, a young prostitute, moves into a seaside motel called the Birdcage Inn, run by a dysfunctional family. Struggling with her circumstances and the family's treatment, she forms an unlikely bond with the daughter…
12
Idol Seungha's R-Rated Film Shooting (2021)
★ 6.6/10Also drama
Film producer Na-eun and director Yeong-tae are on the verge of shelving out cash for an adult film production. They're too busy blaming each other for the messed-up filming. Before another filming begins, Na-eun…
13
Hardball (2001)
★ 6.5/10Also drama
An aimless young man who is scalping tickets, gambling and drinking, agrees to coach a Little League team from the Cabrini Green housing project in Chicago as a condition of getting a loan from a friend.
14
Gracie (2007)
★ 6.2/10Also drama
A teenager faces an uphill battle when she fights to give women the opportunity to play competitive soccer.
15
Hungry Hearts (2015)
★ 6.5/10Also drama
The relationship of a couple who meet by chance in New York City is put to the test when they encounter a life or death circumstance.
16
The Treacherous (2015)
★ 6.1/10Also drama
The story of Joseon's tyrant king Yeonsan who exploits the populace for his own carnal pleasures, his seemingly loyal retainer who controls him and all court dealings, and a woman who seeks vengeance.
17
Hands of Stone (2016)
★ 6.6/10Also drama
The legendary Roberto Duran and his equally legendary trainer Ray Arcel change each other's lives.
18
Rogue Agent (2022)
★ 6.3/10Also drama
Conman Robert Freegard poses as an undercover MI5 agent and kidnaps countless victims amidst a high-stakes manhunt, until the woman who fell for him brings him to justice.
19
Home (2021)
★ 6.7/10Also drama
An ex-felon returns home from prison and must confront the demons of his past.