My Girlfriend's Boyfriend may refer to:
A magical girlfriend, exotic girlfriend, monster girlfriend, nonhuman woman, or supernatural lover, is a female stock character often associated with romantic comedy anime and manga series, and is sometimes considered a genre of its own, or as the leading lady of the "fantastic romance" genre, which combines the fantasy and romance genres.
A boyfriend is a man who is a friend or acquaintance to the speaker, often specifying a regular male companion with whom a person is platonically, romantically or sexually involved.
A boyfriend is a regular male companion in a romantic or sexual relationship.
Mike Birbiglia is an American stand-up comedian, actor, storyteller, director, producer and writer. He is a frequent contributor to This American Life and The Moth, and has released several comedy albums and television specials. His feature-length directorial debut Sleepwalk with Me (2012), based on his one-man show of the same name and in which he also starred, won awards at the Sundance and Nantucket film festivals. He also wrote, directed, and starred in the comedy-drama Don't Think Twice (2016). His 2010 book Sleepwalk with Me and Other Painfully True Stories was a New York Times bestseller and a finalist for the 2011 Thurber Prize for American Humor. Birbiglia has appeared in films such as Your Sister's Sister (2011), Cedar Rapids (2011), and Trainwreck (2015), played a recurring role in Orange Is the New Black, Billions and has guest starred in episodes of Girls, Inside Amy Schumer, and Broad City. He also filled in for Jimmy Kimmel on his talk show for a week, as Kimmel caught COVID-19.
A girlfriend is a female friend or a romantic partner.

Kang Hye-jung is a South Korean actress. Making her film debut in arthouse film Nabi (2001), she rose to stardom and critical acclaim in Park Chan-wook's 2003 revenge thriller Oldboy. A rising star early in her career, she gained acting awards for Han Jae-rim's relationship drama Rules of Dating (2005), and Park Kwang-hyun's Korean War comedy Welcome to Dongmakgol (2005).

My Super Ex-Girlfriend is a 2006 American superhero romantic comedy film directed by Ivan Reitman and starring Uma Thurman and Luke Wilson with Anna Faris, Eddie Izzard, Rainn Wilson and Wanda Sykes in supporting roles. In the film, when a regular guy (Wilson) dumps a superhero (Thurman) for her neediness, she uses her powers to make his life a living hell.

Boyfriends and Girlfriends is a 1987 French romantic comedy-drama film written and directed by Éric Rohmer. The film stars Emmanuelle Chaulet, Sophie Renoir, Anne-Laure Meury, François-Éric Gendron and Éric Viellard. It is the sixth and final instalment in Rohmer's Comedies and Proverbs series. The title literally means the (male) friend of my (female) friend, or perhaps the boyfriend of my girlfriend: it echoes the proverb "Les amis de mes amis sont mes amis".
Brooklyn Sudano is an American actress and director. She starred as Vanessa Scott in the ABC comedy series My Wife and Kids and later played the leading role in the 2006 drama film Rain. Sudano has appeared in films such as Alone in the Dark II (2008), Turn the Beat Around (2010) and With This Ring (2015), and starred in the NBC action series, Taken (2017).
Kiss the Bride is a 2002 American romantic comedy drama film about an Italian family, directed by Vanessa Parise. The film takes place in Parise's hometown of Westerly, Rhode Island. The film premiered at the Hamptons International Film Festival, where it won the Golden Starfish Award. It was released on DVD by MGM Home Entertainment.
My Best Friend's Girl may refer to:

She's Out of My League is a 2010 American romantic comedy film directed by Jim Field Smith in his feature directorial debut, and written by Sean Anders and John Morris. It stars Jay Baruchel as an average man who begins a relationship with a very attractive woman, played by Alice Eve, and is warned by his friends that it is doomed to fall apart because of their differing appearances. T.J. Miller, Mike Vogel, Nate Torrence, Krysten Ritter, Geoff Stults, and Lindsay Sloane also star.
Daryn Tufts is a writer, director, producer, and actor. Tufts’s writing, producing, and directing credits include feature films, documentaries, and television commercials and he has acted in several successful independent films. Tufts has also performed and taught sketch comedy and improvisational comedy with several professional comedy troupes and is the commercial spokesperson for the Questar Corporation. He currently lives in Holladay, Utah.

My Girlfriend's Boyfriend is a PG-rated 2010 American romantic comedy film written and directed by Daryn Tufts, and stars Alyssa Milano, Christopher Gorham, Michael Landes, Beau Bridges, Tom Lenk and Carol Kane.
"My Man" is the English title for "Mon Homme", a French song published in 1920, popularized by Mistinguett and Fanny Brice.
Matt Dunn is a British romantic comedy novelist. He was educated at Chatham House Grammar School in Ramsgate, and then read Sports Science at Brighton Polytechnic.

Flower Girl is a 2013 Nigerian Romantic comedy film produced by Michelle Bello and Michelle Dede, and distributed by Blu Star Entertainment. The film was directed by Michelle Bello. It stars Damilola Adegbite as a hopeless romantic florist who dreams of marrying her long-time boyfriend Umar. Though he promises to marry her once he becomes a partner at the law firm he works for, she becomes impatient.

The Achy Breaky Hearts is a 2016 Filipino romantic comedy film directed by Antoinette Jadaone and starring Ian Veneracion, Richard Yap and Jodi Sta. Maria. The film was produced by Star Cinema and released on June 29, 2016, in theaters nationwide.
My X-Girlfriend's Wedding Reception is a 1999 comedy film directed by Martin Guigui.