Anime and Manga
- Marmalade Boy: Ginta and Arimi pretended to be dating to get Miki (Ginta's crush and best friend) and Yuu (Arimi's ex boyfriend) back, respectively.
- Flay Allster from Mobile Suit Gundam SEED initially seduces Kira to manipulate him into killing the people who murdered her father, but when they are separated by circumstances later on, she realizes that she has fallen in love with him for real.
- Princess Jellyfish: Shoko Inari pretends an (aggressive) romantic interest in Shu, to use his political influence to advance a real estate project. She realizes (after he's seen through her wiles) that she has fallen for him. By this point Shu distrusts her completely, so no relationship ensues.
- Summer Wars: Natsuki has lied to her family about having an awesome boyfriend, and recruits Kenji to play the role when attending an extended family gathering.
- Nisekoi basically revolves around this trope, with the main characters — Raku and Chitoge — paired off by their fathers, good friends and yakuza bosses, to prevent a bloody feud between their gangs. (The rank-and-file gang members are not in on this deception.) And that was after both teens got off to a bad start when Chitoge accidentally bumped onto Raku, causing him to (temporarily) lose his precious pendant, given to him by a long-forgotten childhood love. As much as they openly claim to hate each other's guts, they soon discover that their fake romance is slowly becoming real.
- In Runaways, Karolina and Xavin's relationship initially began as a ruse to try and end the war between their respective species, but over time, they grew to care about each other.
- Zig-zagged in X-Statix, where Phat and Vivisector initially became a couple as a desperate ploy to raise their popularity and discourage their publicity-hungry bosses from killing one of them for drama, but after the death of Edie Sawyer, they decided to pursue a genuine relationship... only to figure out that while they are both gay men, they're not actually attracted to each other.
- The Tangled Web starts with Mara pretending to be Luke's girlfriend to keep away a Fangirl with a highly influential father. Luke lasts about a day before it becomes real.
- In Refiner's Fire, Harry asks Ginny to be his pretend girlfriend to keep away a crowd of... interested... schoolgirls. After a couple of weeks, he asks her out for real.
Film — Live-Action
- Can't Buy Me Love: Ronald, an unpopular nerd, helps a popular girl/cheerleader Cindy. In return, she pretends to be his girlfriend, so he can become more popular.
- Green Card: Georges and Bronte marry for residency (green card) and an apartment respectively.
- Shadowlands: Jack (better known as C. S. Lewis) marries Joy to allow her to stay in England (also a Real Life example.)
- Captain Vorpatril's Alliance: Ivan hurriedly marries Tej to give her Barrayaran citizenship and immunity to arrest by Komarran police. They intend a quickie divorce, but the judge (a friend of Ivan's) determines that no grounds for divorce in Barrayaran law are met and refuses. (In a society where arranged marriages are common, not being in love is not a ground for divorce.)
- Cotillion by Georgette Heyer: Kitty needs a fiance due to family and inheritance pressures and to enable her to travel to London. She bullies Freddy into the role.
- In Parker Pyne Investigates by Agatha Christie,
- In "Problem at Pollensa Bay", a young man comes to Parker Pyne for help with his overbearing mother who refuses to accept the man's fiance. Parker Pyne plans a complicated Operation: Jealousy that involves the man being seen with (and acting pathetically devoted to) a stunningly beautiful woman who's sure to irritate the mother even worse than the first girl, causing her to sympathize with the fiance. The plan goes off without a hitch, although the man does end up getting a crush on the woman (Parker Pyne's assistant).
- A similar plot is used in "The Case of the Discontented Husband", but it goes completely wrong as the man falls head over heels in love with Parker Pyne's assistant and says so in front of everyone (she herself has no feelings for him, since it's just another job to her).
- This is how Katniss and Peeta of The Hunger Games trilogy ended up together: at first they were pretending to be in love with each other to be appealing to the Capitol audiences, then they gradually developed feelings towards each other.
- As the World Turns: Simon and Katie entered a Citizenship Marriage so that he could stay close to Lily and eventually fell in love.
- Grey's Anatomy: Teddy marries a patient because he has a chronic illness and cannot afford surgery so that he will be covered under her insurance. She originally has no romantic interest in him, but they fall in love, though he unfortunately dies shortly after.
- In The Americans, Paul and Elizabeth Jennings were initially paired off by the Centre to pose as a couple so that they could work closely together without arousing suspicion among their American neighbors. After so many years together, they have grown to genuinely love each other. In the fifth season, they even decide to marry each other for real, in the traditional Russian fashion.
- C. S. Lewis and Joy Gresham, as dramatized in the film Shadowlands.
- Sofia Kovalevkaya (Korvin-Krukovskaya) couldn't follow her passion for mathematics in Russia, so she married Vladimir Kovalevskij to be able to leave Russia and study mathematics in Berlin, becoming the first woman to be awarded a doctorate in mathematics, and a prominent mathematician of her day. Their marriage became real enough that they had a daughter, although they latter separated.