Movies Like The Sibling Rule

If you liked The Sibling Rule, a movie directed by Mari SanGiovanni, here are 20 movies with a similar feel, based on TMDB's recommendations. Each one links to its cast, trailer and where it's streaming.

1
Cousins (1989)
★ 6/10
When Larry and Maria learn that their respective spouses are cheating on them, they try to turn the tables on them by pretending to have an affair. However, they soon find themselves falling in love.
2
Dating Amber (2020)
★ 7.1/10
Eddie and Amber decide to stage a relationship in order to stop everyone speculating about their sexuality. Eddie is keen to follow his dad into the military, while Amber dreams of moving to the liberal hub of London…
3
One Small Hitch (2013)
★ 6.6/10
On a flight home to Chicago for a family wedding, childhood friends Josh and Molly innocently agree to fake a wedding engagement to make Josh's dying father happy. Things quickly get out of hand with their two…
4
She's the Man (2006)
★ 6.8/10
Viola Hastings is in a real jam. Complications threaten her scheme to pose as her twin brother, Sebastian, and take his place at a new boarding school. She falls in love with her handsome roommate, Duke, who loves…
5
The Kissing Booth 2 (2020)
★ 7.6/10
With college decisions looming, Elle juggles her long-distance romance with Noah, changing relationship with bestie Lee and feelings for a new classmate.
6
Mr. Jealousy (1998)
★ 5.9/10
After his first date at age 15 ended with the girl making out with another man at a party, aspiring writer Lester Grimm has treated all his girlfriends with jealousy and suspicion. While dating Ramona Ray, paranoia…
7
The Love Hypothesis (2026)
★ 7.9/10
Olive Smith, a biology PhD candidate, and Dr. Adam Carlsen, a hotshot professor and well-known tyrant, enter into a fake relationship, seeing each of their carefully calculated theories on love get thrown into chaos.
8
Endless Love (2014)
★ 6.9/10
A privileged girl and a charismatic boy's instant desire sparks a love affair made only more reckless by parents trying to keep them apart.
9
The Roses (2025)
★ 6.6/10
Life seems easy for picture-perfect couple Ivy and Theo: successful careers, a loving marriage, great kids. But beneath the façade of their supposed ideal life, a storm is brewing – as Theo's career nosedives while…
10
The Object of My Affection (1998)
★ 5.8/10
A pregnant New York social worker begins to develop romantic feelings for her gay best friend, and decides she'd rather raise her child with him, much to the dismay of her overbearing boyfriend.
11
Mrs. Doubtfire (1993)
★ 7.2/10
Loving but irresponsible dad Daniel Hillard, estranged from his exasperated spouse, is crushed by a court order allowing only weekly visits with his kids. When Daniel learns his ex needs a housekeeper, he gets the job…
12
The Kissing Booth 3 (2021)
★ 6.8/10
It's the summer before Elle heads to college, and she has a secret decision to make. Elle has been accepted into Harvard, where boyfriend Noah is matriculating, and also Berkeley, where her BFF Lee is headed and has to…
13
I Now Pronounce You Chuck & Larry (2007)
★ 6.1/10
Firefighters Chuck Ford and Larry Valentine are guy's guys, loyal to the core—which is why when widower Larry asks Chuck to pose as his lover so that he can get domestic partner benefits for his kids, his buddy agrees…
14
The Good Girl (2002)
★ 6.2/10
A discount store clerk strikes up an affair with a stock boy who considers himself the incarnation of Holden Caulfield.
15
To All the Boys I've Loved Before (2018)
★ 7.6/10
Lara Jean's love life goes from imaginary to out of control when her secret letters to every boy she's ever fallen for are mysteriously mailed out.
16
Naomi and Ely's No Kiss List (2015)
★ 5.9/10
The bonds between Naomi and Ely are tested when they fall for the same guy.
17
Housesitter (1992)
★ 6.2/10
Con artist Gwen moves into Newton's empty home without his knowledge and begins setting up house, posing as his new wife.
18
Elena Undone (2010)
★ 6.9/10
The wife of a pastor who preaches against homosexuality embarks on an affair with a female writer.
19
Lady Windermere's Fan (1925)
★ 6.9/10
A society woman believes her husband is having an affair, a misconception which may have dire personal consequences for all involved.
20
The Perfect Date (2019)
★ 6.4/10
No beau? No problem! To earn money for college, a high schooler creates a dating app that lets him act as a stand-in boyfriend.