History Main / FidelityTest

* {{Superman}} manages to do this ''accidentally'' to Lois Lane. After Clark and Lois have become a couple, but before he tells her that he's Superman, he forgets himself and asks Lois to dinner while still disguised as Superman, only for her to snap at him, reminding him that she's Clark's girlfriend.

* The novel ''Literature/DonQuixote'' has several smaller novels inside of itself, one of this "The Impertinent Curious", a married man decides to put to test his wife's loyalty through his friend, all goes well until his friend happens to fall in love with his wife and runs off with her after performing a perfectly executed theater making the man believe his wife is faithful. The man eventually commits suicide when he finds out that he was the responsible all along.

* Several italian folk tales have a version of this, often with the heroine as the testee. In one such case, a woman was imprisoned by her lover's ogress mother, who insisted she complete impossible tasks under pain of death (the mother wanted the excuse to kill her so she could marry her son to a princess.) The woman would attempt the task, realize she was going to fail, and have a handsome youth appear to her and offer to complete the task in exchange for a kiss. The woman refuses each time--if he were her lover, a thousand kisses, but he is not and will not get one-- and the youth completes the tasks for her anyway, finally revealing that he is her lover after the last task. He gets the thousand kisses.

* In the ''Silk Stalkings'' episode "Red Flag", a company sends out attractive women to test the fidelity of men engaged to be married. They're usually hired by the families of the women to make sure the guy won't cheat on her after they're married.

* The reality TV series ''Cheaters'' runs on this trope, with men and women who believe their partners are unfaithful setting up scenarios where they can test their partners fidelity.

* Played with in ''LiveActionTelevision/{{Supernatural}}'' where a MonsterOfTheWeek (a ghost) gets picked up from the side of the road by men and attempts to seduce them, killing them if they give in. [[spoiler:However she actually won't let them refuse, effectively making her nothing more than a rapist who murders her victim afterwards.]]

* In ''Disney/{{Tangled}}'', Mother Gothel proposes that Rapunzel put Flynn to this by giving him the tiara that was the price of guiding her. [[spoiler:Rapunzel chickens out, but later does it. Mother Gothel instantly puts her plan into action and makes it convincingly look like he failed it.]]

* [https://www.rebelcircus.com/blog/girl-sends-adult-film-star-to-test-boyfriends-faithfulness-and-immediately-regrets-it/ A girl hires a pornstar to test her boyfriend.] The pornstar approaches the guy in public and openly hits on him. He's a little put off by her and wonders what she wants with him. At the end, though, he does accept her phone number. The girlfriend is a little upset at this and calls him afterwards to confront him. The result? He dumps her over the phone for this lack of trust, and she feels that he had no right to do that.

* A girl hires a pornstar to test her boyfriend. The pornstar approaches the guy in public and openly hits on him. He's a little put off by her and wonders what she wants with him. At the end, though, he does accept her phone number. The girlfriend is a little upset at this and calls him afterwards to confront him. The result? He dumps her over the phone for this lack of trust, and she feels that he had no right to do that.

* In ''Theatre/TheMerchantOfVenice'', Portia and her servant test the fidelity of their newly-acquired husbands by demanding their wedding rings after saving the life of their friend, Antonio (it's complicated--there's [[WholesomeCrossdresser drag involved]]). The men do fail the test, and the wives lord it over them for the rest of the play.

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''TheMerchantOfVenice'' features an ostensibly non-sexual variant. Portia and Nerissa give rings to their respective lovers, Bassanio and Gratiano, extracting a promise that they will never give said rings to anyone else. Then Portia, pulling a SweetPollyOliver in the guise of a young lawyer, saves the life of Bassanio’s friend Antonio and demands the rings as payment. The men fail the test, but the women forgive them after revealing the truth, content that they’ve learned their lesson. Whether Bassanio giving up his girlfriend’s ring to a handsome young lawyer is meant to have sexual subtext is open to interpretation, but given the sheer volume of HoYay in the play and the fact that giving someone a ring was one of many symbols that the dirty-minded Elizabethans associated with sex…

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* [=YouTube=] "song lyric" pranks function as this: a person texts lyrics lines from an amorous popular song (such as Creator/TaylorSwift's "You Belong with Me" or Creator/AriannaGrande's "Into You") to their partner's best friend (with the partner witnessing) or their best friend's partner (with the best friend witnessing) to gauge the target's reaction; of course, the test only works if the person being texted a) is unfamiliar with the lyrics and b) hasn't been tipped off about the prank.

* In ''WesternAnimation/TheFlintstones'', Fred and Barney sneak from their wives to have a night's fun. However Wilma and Betty figure this out and disguise themselves to join them at the night club, then they attempt to hit on them but Fred and Barney treat them like {{AbhorrentAdmirer}}s running away from them not realizing their true identities.

* In ''WesternAnimation/TheFlintstones'', Fred and Barney sneak from their wives to have a night's fun. However Wilma and Betty figure this out and disguise themselves to join them at the night club, then they attempt to hit on them but Fred and Barney treat them like AbhorrentAdmirers running away from them not realizing their true identities.

[[folder:Advertising]]
* There's a commercial (based on a very old joke) where a groom in a tux is propositioned by his fiancee's sister. He runs out the door and gets to the car, when his father-in-law-to-be and a group of other people tell him he passed the test. [[spoiler: Then a voice-over "Lesson learned: Always keep Trojans in your car". [[https://www.youtube.com/watch?v=TaXKGj2DwFo Here on Youtube.]] ]]
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* There's an old joke-cum-urban-legend that subverts this trope. A wife who disguises herself and follows her husband to a costume party. She seduces him as a FidelityTest, but learns later that he gave his costume to someone else.

* ''WebVideo/VideoGameConfessions'' has an unintentional example when [[ReallyGetsAround Link]] comes into the bar and starts hitting on Sheik...who is actually [[WholesomeCrossdresser Zelda]] [[KingIncogito in disguise]]. It doesn't end well for Link.

* A (possibly) unintentional example in Creator/SergeyLukyanenko's ''[[Literature/LabyrinthOfReflections False Mirrors]]'', Leonid's marriage is on the rocks. Meanwhile, he assembles a group of former Divers and hackers and goes into a virtual game to try to find the entrance to the Diver Temple. Along the way, they pick up a female player named Nike. During the journey, Leonid tells Nike he likes her. After the adventure, he takes off his VR helmet to find out that Nike was his wife Vicka in disguise. Realizes he should have guessed Nike's identity, since Nike is the Greek goddess of victory, whose Roman counterpart is Victoria. He fears the consequences of telling Nike he liked her, but his wife is surprisingly understanding, and he realizes that Nike was merely a projection Vicka's self-image, so, really, he was attracted to the same qualities that made him fall in love with Vicka in the first place. CoitusEnsues.

* The legal principle of Condonation can give rise to a strange inversion of this trope by allowing for tests to prove that a person knowingly accepted their partner's infidelity. One lawyer [[http://www.cracked.com/personal-experiences-2369-pettiness-porn-ugly-realities-being-divorce-lawyer.html describes]] someone who was caught having an affair, then tried to pull a HoneyTrap on their spouse, since continuing to have sex would be evidence that the spouse condoned the past affair.

* ''VideoGameConfessions'' has an unintentional example when [[ReallyGetsAround Link]] comes into the bar and starts hitting on Sheik...who is actually [[WholesomeCrossdresser Zelda]] [[KingIncogito in disguise]]. It doesn't end well for Link.

* In ''CosiFanTutte'', Ferrando and Guglielmo make a bet with Don Alfonso and he concocts the ZanyScheme in which they attempt to seduce their girlfriends disguised as Albanians.

* Female example: the song "Sovay", in which a woman tests her lover by dressing as a [[TheHighwayman highwayman]] and attempting to rob him of the ring she gave him.

* ''Series/VeronicaMars'': Veronica is hired by a neurotic girlfriend to test her boyfriend's commitment to her before he can propose, which involves setting up a "temptation scenario" that ends up starring [[FilleFatale Veronica herself]].

* In ''UruseiYatsura'' chapter 25, Lum went to Ataru's classroom disguised as a normal human. She didn't really intend it as a fidelity test (by this point, it's pretty obvious that Ataru would fail), but rather to see whether Mendō's suggestion that Ataru "prefers a girl as ordinary as himself" was true. However, she got upset at Ataru when he told Mendō that "Lum's yours [now]", so she (while in disguise) asked Ataru to promise to be faithful, and when he did, she dropped the disguise and told him "I will hold you to that!"