->''"I actually see my ex more now than I did when we were married because you have [[IsThatWhatTheyreCallingItNow special time]], quality time with the kids... We want them to still see that we love each other very much and we're best friends."''
-->-- '''Cindy Margolis'''

Two characters that used to be a couple broke up. They got bored of each other or argued too much, [[ToiletSeatDivorce he just wouldn't put the seat down, she used too much toilet paper]], whatever. Emotionally or mentally they didn't think they were right for each other. Sexually, however, they still get along just fine.

They may only get to kissing each other or get further than that, but as long as they're reinitiating a physical relationship it's fair game. It can naturally take on a variety of forms, as people are complicated; it may just be sex and [[FriendsWithBenefits friendship]], it may be a pattern of hooking up, swearing to never see each other again, and hooking up again, or they could go back into a relationship.

May lead to getting back together, particularly if it starts after a separation or after they've moved on to other people for added drama/comedy. Naturally, a common sitcom trope.

Subtrope of AmicableExes, where they're ''really'' amiable. Supertrope to NewOldFlame. May lead to a RelationshipRevolvingDoor situation.

----
!!Examples:

[[foldercontrol]]

[[folder: Anime And Manga ]]

* ''Franchise/LupinIII'': [[HandsomeLech Lupin]] and [[MsFanservice Fujiko]] engage in this, due to the nature of their on-again off-again relationship. The most notable instance occurs in ''Anime/LupinIIITheSecretOfTwilightGemini.'' They get it on twice, during one of their off periods, despite Lupin's interest in [[GirlOfTheWeek Lara]]. The first attempt gets subverted by Sadachiyo and his men, who crash their hotel room to assassinate Lupin. The second attempt, however, goes off without a hitch. [[spoiler: [[RefugeInAudacity He bangs her in the file room of a Moroccan police station!!]]]]

[[/folder]]

[[folder: Film ]]

* In ''TheWeddingSinger'', Creator/AdamSandler's ex-girlfriend takes advantage of his drunken blackout to have a one-night stand with him. He rejects her once he sobers up the next morning.
* Happens between the title character and his ex-wife in ''TheLincolnLawyer''.
* In the second ''Film/{{Hatchet}}'' movie, two of the hunters hunting Crowley used to be married, causing tension between them. Eventually they end up alone together, and decide to have a shag in the middle of the woods.

[[/folder]]

[[folder: Joke ]]

* There is an old joke about a woman who visits a friend she didn't see for years, and sees several children who look just like the husband their mother divorced years ago. When questioned, said mother says "He sometimes visits in order to apologise".

[[/folder]]

[[folder: Literature ]]

* ''Literature/TheBookOfJoe'' has Joe and his former high school girlfriend Carly reconnect when he revisits town. It is implied that they'll rekindle their relationship following their night together.

[[/folder]]

[[folder: Live Action TV ]]

* Used as a plot device in the PilotEpisode of ''{{Cheers}}'', where Diane's fiance jilts her so he can run off on their planned honeymoon with his ex-wife, thus forcing her to work at Sam Malone's bar for several years' worth of {{UST}}.
* ''{{Friends}}'': Ross and Rachel were guilty of this, several times, during break-ups, and when Monica and Richard break up the second time she offers him one last night together.
* In ''TheWire'' [=McNulty=]'s estranged wife Elena propositions him after a make-peace date. This leads him to think they can get together again; however, it proves to be a one-time occasion.
* ''TheGoldenGirls'' had an entire arc of it with Dorothy and Stan, leading up to the intended, but called off, re-marriage.
* Used to definitely break up Rachel's relationship at the end of the first season of ''HowToMakeItInAmerica''. She ponders over breaking up with her boyfriend, gets drunk, sleeps with her ex Ben, then tells her current boyfriend it's over and underlines how over it is by mentioning she slept with Ben.
* ''Series/{{Scrubs}}'': Dr. Cox started sleeping with his ex-wife Jordan, who is one of the few people with a strong enough personality to keep up with him. After about a season and a half of this just loathing himself and sabotaging any attempt at a new relationship, they get back together officially when Jordan becomes pregnant and remain together officially unmarried the rest of the series.
** Subverted in a later episode, when it's revealed that, due to a legal mix-up, they were never actually divorced (they signed the wrong papers). This ends up ruining their relationship, until Cox gets on one knee at the end of the episode and asks Jordan to divorce him. She happily accepts, and they have a divorce ceremony. The witnesses just look at Cox and Jordan's kid and Carla tells him that he'll never be normal.
* ''MyNameIsEarl'': Earl's wife Joy divorced him in the first episode and those early episode had a very rocky relationship. When Earl accidentally ruined Joy's marriage to Darnell he set out to make it up to her, which managed to get them back together as friends and accidentally sparked a night together, forcing Earl to need to make things up to Darnell.
** Darnell actually wasn't pissed off at Earl for sleeping with Joy. After all, Darnell did it to Earl first.
* ''TheBigBangTheory'': Leonard and Penny broke up late-third season and in the season finale Penny started dating again, only to find herself unable to go back to stupid guys after dating Leonard (a physicist). Coming home drunk and depressed she took Leonard to bed, which he misinterpreted as Penny wanting to get back together. She was very embarrassed because that was not the intention (she gets very loose when she drinks) and Leonard was upset over being used for sex.
* ''Series/{{Castle}}'' and his second ex-wife briefly remembered why they got married and spent the summer in the Hamptons together - which reminded them why they got divorced.
** He also has sex with his first ex-wife (Alex's mother) about twice a year. They realize they're not right for each other, but the sex is too intense to avoid.
* ''Series/HowIMetYourMother'' had an episode revolving around Ted and Robin having sex in order to avoid arguments (they had broken up but had recently become roommates because Robin lost her job). Interestingly enough, their activities did not end because of romantic complications, but because ''Barney'' was [[CannotSpitItOut secretly in love with Robin at the time]], and when Ted figured this out (due to Barney's not-so-subtle attempts to stop them from fighting and therefore having sex) he immediately called off his arrangement with Robin and allowed her to believe it was because he was afraid he'd redevelop feelings for her.
* ''{{Frasier}}'' does it at least once, with his ex Lillith Sternin.
* In one episode, ''{{Blossom}}'' catches her divorced parents fooling around. They hadn't had sex but may have if they weren't caught.
* ''{{Seinfeld}}'' did this, with Jerry and Elaine.
* ''CougarTown'': Jules and Bobby hooked up after having been divorced for a while. Grayson and Andy wrote a song about it, which they called (appropriately), "Sex with Your Ex." It went:
-->Sex with your ex is really great/but sex with your ex is a big mistake/oh no no/sex with your ex.
* Happened in ''Series/PanAm'' when Bridgett came back, screwed up Dean and Collette's relationship.
* The fourth season of ''Series/BreakingBad'' has Walter having sex with his wife again after they split.
* Raylan Givens in ''Series/{{Justified}}'' has slept with his ex-wife several times, even though she's now married to another man.
* ''{{Bones}}'': Booth has had a couple of "one time only" sleepovers with his ex-girlfriend, the mother of his son. Similarly Bones herself slept with her former boyfriend (and thesis supervisor) when he came into town.
* ''Series/{{Parenthood}}'' - Crosby and Jasmine end up in bed together after discussing (over copious amounts of wine) the heartbreak they both felt trying to explain to their son, Jabar, that they wouldn't be getting married.
* In ''That70sShow'' episode "The Relapse" after her mother leaves, Donna is distraught and ends up having sex with her ex-boyfriend, Eric. Eric believes that this means that they're back together, and is quite upset when he learns that it doesn't.
* ''Series/HouseOfLies'' opens with Marty regretting a night spent with his ex-wife. Doesn't stop him from doing it again in other episodes.
* Every. Single. Time. Zoe shows up on LieToMe, she and Cal get busy.
* The pros and cons are discussed often on ''SexAndTheCity''. Carrie, Samantha and Miranda all hook up with ex-boyfriends, to varying degrees of success.
** In Miranda's case, she hooks up with Steve after their first break-up which leads to them re-kindling their relationship, and again after their second break-up [[PitySex when Steve is diagnosed with testicular cancer]], which leads to Miranda falling pregnant [[LawOfInverseFertility in spite of considerable odds]].
** Samantha does this twice with her womanizing ex Richard.
-->'''Samantha:''' ''(while discussing whether or not Carrie should have one last hook-up with Big before he leaves New York)'' Fuck you once, shame on you. Fuck you twice, shame on me.
* ''Series/MadMen'': Betty and Don Season 6 Episode 9 "The Better Half."
* Happened a lot between Series/{{House}} and Cuddy. They had a ViciousCycle of being an OfficialCouple, breaking up, sleeping together, being friends with benefits, deciding to start dating again, ad nauseum until ''finally'' deciding they were BetterAsFriends.
* Interesting variation on ''Series/StarTrekDeepSpaceNine'': Worf was married to Jadzia Dax, Dax being a symbiont passed between hosts. Jadzia dies and Dax is placed in Ezri. When Worf sleeps with Ezri, it's primarily him trying to be with Jadzia again.
* In ''Series/{{Psych}}'' this happens between Shawn's divorced parents, and [[ParentalSexualitySquick he is traumatized]] when he walks in on a PrimalScene. They don't get back together, but are still [[AmicableExes good friends.]]

[[/folder]]

[[folder: Memoir ]]

* In Suzanne Finnamore's 'Split,' she admits to having sex with her ex in the midst of their messy divorce, even though he's theoretically with The Other Woman (the same one he left Suzanne for) and she claims that sex is The Best. Ever.

[[/folder]]

[[folder: Music ]]

* Warned against in E-ROTIC's aptly-titled "Max Don't Have Sex With Your Ex".
* The subject of Music/ChildishGambino's "Heartbeat" is the narrator having hooking up with his ex while both of them have moved on to other people, and the emotional dynamics of their relationship.

[[/folder]]

[[folder: Video Games ]]

* In ''{{Fahrenheit}}'', Lucas can bed his ex-GF Tiffany when she comes to pick up the last bits of her stuff from his apartment mid-game, [[HotCoffeeMinigame complete with an interactive sex scene]] (that was eventually cut from the American release).
* SilentHillShatteredMemories: Harry is talked into having sex with Dahlia (who claims to be his wife, and that they've done it plenty of times before). [[spoiler: Of course, given TheReveal, it's doubtful that this has ever actually happened.]]

[[/folder]]

[[folder: Webcomics ]]

* ''WebComic/SandraOnTheRocks'': Domenico's reaction to finding out about Sandra's mo-cap session with Dark Matter games was to call it foolish and demand she cancel it. Except his ex [[http://www.sandraontherocks.com/strips-sotr/quite_bad wasn't about to let that happen.]] One shouting match and a crapload of BelligerentSexualTension later, [[http://www.sandraontherocks.com/strips-sotr/holy_highballs and...]] cue SexyDiscretionShot.