Silsila (1981)
Amit marries his deceased brother’s fiancee out of duty and leaves Chandni. Chandni marries somebody else. They cross paths later and have an affair.
drama
Igby Goes Down (2002) – Amanda Peet, Claire Danes
Igby gets to bang the mistress of his godfather. But his girlfriend also cheats on him and dumps him for his older brother.
Headhunters (2011)
Roger has a tall, model-type, trophy wife and fears that she will get fucked by some tall, handsome guy if he doesn’t keep her happy with money. He is right, because one day, a tall, handsome guy did fuck his wife.
Brothers (2004) aka Brødre
A wife thinks her military husband died in Afghanistan and makes out with her brother-in-law on her birthday. Her husband returns and becomes paranoid, asking her if she fucked his brother while he was gone and presumed dead.
Resolve (2014)
A female who is in a complicated relationship screws the boyfriend of her officemate.
5 to 7 (2014)
A French wife dates and bangs her young lover with her French husband’s consent, but they can only meet between 5 P.M. and 7 P.M. each evening.
Last Night (2010) – Keira Knightley, Eva Mendes
A wife gets jealous of her husband’s pretty co-worker so she uses this as an excuse to date her ex and make out with him.
Valley of the Dolls (1967)
Three young women in show business cheat on their partners in one way or another.
Fever (1991) – Marcia Gay Harden
Ray gets out of prison and wants to get back with Lacy but she is already married. He informs Lacy’s husband that he’ll be seeing her in the next days to try to win her back. Of course, Lacy’s husband is pissed. Ray scores a bit when Lacy makes out with him.
Let’s Go To Rose Motel 2 – Thirst (2014)
A wife cheats with an old friend from college. Their partners get revenge by cheating on them too. In the end, they agree to keep their friendships and their marriages intact.