So AliceAndBob don't know each other yet, or Alice regards Bob with either indifference or dislike. But then, she witnesses him committing -- or becomes the recipient of -- some [[PetTheDog single act of kindness]] (rescuing someone from bullies, stopping to help someone with errands, etc.) that makes her think "maybe he's not so bad after all", causes her to develop a blossoming crush on him, or otherwise shoehorns the two towards a romantic relationship.

Psychology-wise, the trope works due to the belief on the part of the girl that only she has seen this "hidden side" of the guy, which makes her feel special and connected with him. After all, the appeal of [[AllGirlsWantBadBoys the bad boy]] is that he only acts like a dick around people other than ''you''. DangerouslyGenreSavvy characters can exploit this.

Essentially, a form of RelationshipUpgrade that tends to happen very early on in the RomanceArc, if not start it entirely. RescueRomance and ReturningTheHandkerchief are particularly common types of Samaritan Relationship Starter.
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!!Examples:

[[foldercontrol]]

[[folder: Anime and Manga ]]

* When Shinji defeats the Angel in his first fight together with Asuka in ''Anime/NeonGenesisEvangelion''.
** Even more so when he saves her from death by volcano by jumping into the lava without any sort of protective equipment.
** On the other hand, this eventually gets inverted: Asuka becomes allergic to anyone demonstrating kindness to her, [[DontYouDarePityMe deliberately mistaking their genuine intentions towards her as pity]].
* In ''{{Ratman}}'', the RebelliousPrincess character already kind of likes the hero, though she thinks of him as a wimpy kid who needs protection. Then she sees him rescue a kitten from being run over (without the benefit of superpowers) and she immediately upgrades her opinion to "has a hero's heart"--especially significant as the [[FakeUltimateHero "real" professional heroes]] ignored the situation.
** It's also happen with Haruka, who begin to appreciate [[{{Gonk}} Taishi/ Fatman]] after seeing him calming down a child using his TransformationSequence and free pizza on his own account. Taishi didn't know this... and arrange a RescueRomance situation to impress her. HilarityEnsues. Then [[HeartwarmingMoment Heartwarming Ensues]]
* In ''MidoriDays'', it's ''this trope'', not RescueRomance, that kickstarts Takako Ayase's crush towards Seiji Sawamura. Seiji does catch her attention after he rescues her from [[{{Delinquents}} school delinquents]], but she's still wary of him because she still believes he's a blood-thirsty fight seeker. It's only after witnessing Sawamura deliberately taking a beating without retaliating in order to save a friend and to defuse the hate the {{Delinquents}} have for him, that she falls in love with him.
* Invoked in ''Manga/TheWorldGodOnlyKnows'' for the middle school girl's capture, which is mostly told from her perspective. Keima fakes being a member of the swim team and pretends to do really well and looks cool. When he disappears, she builds up a false impression of him as a really cool upperclassman (he calls it a free love potion to be a sempai), which balances against his bad reputation and has her develop a crush on him. [[spoiler:And later when he's checking for goddesses, we see that unlike all of the other girls she does not even remember him because he managed to get out the runaway spirit while barely speaking to her. Which is a good thing.]]
* In ''Manga/WildRock'', Yuni falls into an animal trap set by Selim. Selim gets him out and gently nurses him back to health. Since they're of [[FeudingFamilies rival clans]], Yuni wouldn't have given him the time of day before this.
* In ''Anime/CodeGeass'', [[NaiveEverygirl Shirley]] thinks [[MagnificentBastard Lelouch]] is a cold, spoiled brat until she witnesses him helping out some strangers when no one else would. Thus begins her infamous and tragic crush on him.
* Played for laughs in ''Manga/RanmaOneHalf'' with Ukyo; she and Ranma already have an ArrangedMarriage, but he's initially unaware and she's initially out for revenge because she thinks he abandoned her. When he interrupts her rant about being ruined for marriage and cursed to be alone forever by telling her that she's a very cute girl and will make someone a great wife someday, that's when she drops the vendetta and decides to give being engaged to him another shot. Especially because his ''[[LoveDodecahedron other]]'' ArrangedMarriage is a {{tsundere}} with whom he evidently does ''not'' get along.

[[/folder]]

[[folder: Fan Works ]]

* In Episode 13 of the second season of ''[[DNAKpts4tv Death Note: The Abridged Series (kpts4tv)]]'', when Near reveals that Kira saved him from being molested the FoeYay subtext becomes text-[[DatingCatwoman Near's still trying to catch Kira but their dialogue gets]] ''[[DatingCatwoman very]]'' [[DatingCatwoman flirty.]]
-->'''Light:''' So... you're a virgin?
* The ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''Fanfic/GimmeShelter suggests this trope is the reason that Fancy and Fleur are seen together. Specifically, he took her in for the night after she got caught in a storm without her coat, and asked for a date in return, which she agreed to.

[[/folder]]

[[folder: Film ]]

* In ''Film/{{Outlander}}'', Freya reconsiders her opinion of Kainen after hearing how his valor in the fight against the bear saved her father's life.
* Deliciously played with in ''Film/RedEye'', which sort-of resembles a romantic comedy in the very beginning, before turning all creepy.
* ''Disney/TheHunchbackOfNotreDame'' - Phoebus is attracted to Esmerelda from the get-go (as is basically every main character), but once he sees her stand up to Frollo and his guards to protect Quasimodo, it's definite. Esmerelda initially sees ''him'' as just another one of Frollo's mooks, but that changes for similar reasons.
* ''Disney/BeautyAndTheBeast'' - When the Beast fights off wolves to save Belle, she takes a second look at him.
* ''Film/SilverLiningsPlaybook'' - Tiffany is touched when she overhears Pat standing up for her in a conversation with one of her former coworkers.
* ''Film/GoodDick'' - The main character's relationship starts this way.

[[/folder]]

[[folder: Live Action TV ]]

* This is what kickstarts the WillTheyOrWontThey for Barney and Robin in Series/HowIMetYourMother, when Barney comforts Robin after she is dumped by a jerk boyfriend. They end up sleeping together, which leads to Barney realising he is in love with Robin.

[[/folder]]

[[folder: Religion and Mythology ]]

* Literature/TheBible provides a variant: when Abraham's servant Eliezer is sent on a journey to find a wife for Isaac, he decides to pick the first woman who, when asked for a drink, offers to draw water for his camels as well. Given how physically exhausting it was to lug water out of a well for so many animals, the point was to pick a woman willing to go out of her way to help anyone in need.

[[/folder]]

[[folder: Video Games ]]

* In the VideoGame/NeverwinterNights mod The Aielund Saga, Criosa really starts to consider the male player character in this manner if you take the heroic dialogue options when helping out the dwarves at the start of chapter 3.

[[/folder]]

[[folder: Western Animation ]]

* ''TheSpectacularSpiderMan'', Season 2: JerkJock Flash Thompson tries to hook up with quiet and artistic Sha Shan, completely failing to woo her when he relies on his usual sports reputation and personality to attract her attention. She only begins to respond to his affections when he reports to his coach that one of his teammates was using performance-enhancing drugs during their recent championship game. His actions force the team to retroactively forfeit the game and lose their title, something that he had worked long and hard for, but he felt that the championship did not mean anything if had been earned dishonestly. After this, Sha begins to reciprocate his feelings.
* In ''TotalDramaIsland'', Courtney finds out that Duncan is a JerkWithAHeartOfGold when she sees him tricking DJ with a replacement Bunny so DJ wouldn't be sad.

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