All the various tropes of the RomanceNovel.
* AltarDiplomacy: The hero and heroine are arranged to be married for politics, whether they like it or not.
* AllMenAreRapists: In older romances; not so common now. It can be seen as a mark on Western culture as a whole that women are more comfortable reading about consensual sex than they were. Older romances, dating back to TheSeventies, tended to use rape as a way to give the heroine (and thus the reader) what they wanted while absolving her of the guilt of choosing it.
* AntiHero: The types vary, but romance novel leads can tend towards bad boys (ready to be reformed) instead of a clean cut, straitlaced fellow.
* ArabOilSheikh: So popular as the male lead that you can buy 'sheikh' omnibuses. Tends to be common among certain categories of the category novels.
* ArrangedMarriage: A common technique in historicals to force the hero and heroine to deal with each other.
* BrokenBird: Women love to see the healing power of love. Most have a side of IntimateHealing as well, but usually after the hero is a bit less screwed up.
* ButNotTooForeign: Despite the sheikh novels mentioned above, less "genre" romances often have heroes who are just one exotic (from a US perspective) quarter: Native American, Japanese, Arab or the like, but very rarely are full members of non-European ethnicities in ancestry and upbringing.
** Heroines are even less likely to be exotic.
* CannotSpitItOut: In some novels, an extreme importance is placed on the act of uttering the words "I love you".
* [[DoesNotLikeMen Does Not Like Women]]: The special romance-novel version of HeManWomanHater, in which the male hero only hates women because of the actions of a ''bad'' woman, and will be cured in the end by the ''good'' heroine.
* DoubleInLawMarriage: A common plot is for the heroine's sister and the hero's brother to have married, had a child, and then died; this forces the leads to interact on more or less hostile terms over custody, until the matter is resolved by their marriage.
* ExtrudedBookProduct: Harlequin[=/=]Mills & Boon "category" romances
* FanNickname: Many abbreviations for common term among fans, including:
** H/h - Hero/heroine
** HEA - HappilyEverAfter
** HFN - Happy For Now
** PNR - ParanormalRomance
** TSTL - [[TooDumbToLive Too Stupid To Live]]
* FlirtyStepsiblings: A common way to make the hero and heroine resent each other but be unable to avoid each other.
* GoodPeopleHaveGoodSex: And any past sexual relationships (usually with a conveniently deceased spouse) the heroine has had will be unsatisfying. And even if it was, it still hasn't been nearly as good as it is now. This can even apply to the heroes occasionally.
* HappilyEverAfter: Explicitly described by many readers and writers as an essential mark of the genre, distinguishing it from other love stories. Abbreviated HEA.
** Sometimes subverted as a Happy For Now, where the characters are left in a situation which may succeed and may not. Abbreviated HFN.
* HonorableMarriageProposal: Common in historical romances. May lead to MarriageBeforeRomance.
* TheFourLoves: Arguably the reason for the existence of the genre.
* LadykillerInLove: The "rake" or chronically womanizing man is a popular hero character. He is almost universally guaranteed to no longer be interested in anyone but the heroine (a possible exception is, of all things, the ur-example of the character, Lord Damerel in Georgette Heyer's ''Venetia''.) There is often a scene where a willing woman offers herself and he's quite surprised to not want to take her up on it.
* LovableRogue: the male lead character is simultaneously desirable, and off-putting or threatening.
* LoveTropes: All of them.
* MagicalNanny: Often in the Magical Stepmother form, though in that case the marriage is not for real.
* MagicalNativeAmerican: Often, if historical.
* ManInAKilt: A popular male lead in historical settings is the rugged Highlander.
* MarriageOfConvenience: The couple have been thrown together into a marriage or partnership, bringing them together and immediately into a romantic environment.
* MillsAndBoonProse: Ironically despite the Mills and Boon category romances being the TropeNamer, most romance novels avert this trope in favor of less PurpleProse-like sex scenes.
* PublicMediumIgnorance: Romance novels are full of PurpleProse, [[CoitusEnsues gratuitous sex]] and are basically thinly veiled porn for women, or "mommy porn". [[RhetoricalQuestionBlunder Right?]]
** Despite the fact that MillsAndBoonProse is rare in the genre these days and the fact that most sex scenes in a RomanceNovel are an important part of the emotional connection of the hero and heroine, no one seems to know this. Some people still think that romance novels are full of [[NotIfTheyEnjoyedItRationalization rape]], even though that became rare at the start of TheEighties, thirty years ago!
* RollInTheHay: A couple on a farm will make love in a hay barrack.
* SturgeonsLaw: The absolute volume of romance novels produced including both category and single title today, and considering past efforts, means that most readers can go years without reading something they consider belonging to the bottom 90%. This bottom 90% does contribute to [[PopculturalOsmosis society's opinion]] on the genre, however.
* TooDumbToLive: Far too many of the heroines.
** Most the common in romantic suspense genre as a way to have an otherwise intelligent heroine get captured by the villain so the hero can have a StormTheCastle rescue moment.
* TheyDo: Essential for the HappilyEverAfter
* WillTheyOrWontThey: They Will.
* YourCheatingHeart: If the woman is currently married, her husband may do this if he is the RomanticFalseLead. Sometimes if the hero has a pre-established significant other, he can do this, too, though it will be made out to be [[GoodAdulteryBadAdultery for a good reason]].