- Doumeki and Watanuki of Xxx Holic behave like this around each other, much to the amusement of Yuuko (and the readers).
- Tsubasa and Misaki from Alice Academy would often pair up in couple events. They both scoff at the notion that they might be going out, but their peers noted that they're practically married already. They eventually got together for real, though.
- Levi and Hanji from Attack on Titan seem to have this going on. They're implied to have known each other for quite some time and they're almost always teasing one another. (Something most people would get roundhouse kicked for if they tried that with Levi.)
- In Axis Powers Hetalia there's France and England, who've known each other since the very beginning of time and probably have a thousand romance tropes under their belt. Not to mention, almost every time they're seen together they are bickering.
- After consummating their love for one another Guts and Casca from Berserk begin acting like this toward one another throughout the entire Griffith rescue operation, with them both getting miffed and jealous toward one another, but are clearly seen being very caring and sentimental toward each other (with some Slap-Slap-Kiss action in-between, especially from Casca). Judeau and Pippin take this as a good thing and play it for the laughs. Griffith, judging from they way he is staring at the couple from underneath his helmet and seeing that he had been through the hideous ordeal of being tortured for a year only to come back to see a change in authority, power, and affection between Guts, Casca, and himself doesn't seem very pleased with this...
- Hotsuma and Shusei of Betrayal Knows My Name are super harmonic and gentle with each other but they do bicker quite often and Luka (yes, that Luka) calls them out on it at one point. They're not amused.
- In the dub of Bakuten Shoot Beyblade Max and Rei describe Takao and Kai this way. The amount of Slash Fic those two inspired back in the day makes this about ten times funnier.
- In Brave10, Rokuro acts the nagging wife to Yukimura's lazy lech of a husband. Taken up a notch during the exile arc of the sequel, where Rokuro starts dressing like a housewife and beating Yukimura with a broom for being a drunk who's in the way of his cleaning.
- Dazai and Chuuya from Bungou Stray Dogs are former partners. They throw insults and claim to dislike each other. They still manage to battle the common enemy together perfectly well, however, and their banter can be seen more as a version of this trope between snarky, jilted ex-lovers more than anything.
- Yuu and Nao from Charlotte are very much this trope, and it even gets discussed by Yusa and Joujirou at one point.
- Childhood Friends and Heterosexual Life-Partners Liszt and Chopin from Classi9 are roommates and often fondly bickering about their way of playing the piano. They're usually paired in duets when playing in public because it helps with Chopin's stage fright and Liszt has fewer chances to stay in his demonic form long enough to hurt someone or himself.
- Lelouch and C.C. from Code Geass have a constant back and forth going on, usually involving C.C. stealing his credit cards to order ridiculous amounts of pizza among other things. In addition, they share Lelouch's room, possibly his bed, and C.C. is constantly seen wearing his clothes.
- Lelouch and Suzaku also have quite a bit of this, especially when they were kids, and in the audio dramas for both pairs.
- Detective Conan:
- Heiji and Kazuha. They are Childhood Friends who bicker with each other, but do love each other, even if they have a very hard time confessing to each other.
- The same goes to Shinichi in Ran; when Conan was reverted to Shinichi for a day in Desperate Revival, their classmates just referred to them as married.
- In episode 2 of Digimon Savers, Marcus is trying to tell Yoshi to leave, but she refuses, so they get into an argument. Then Kristy walks past:Kristy: [to Marcus and Yoshi] Stop arguing like an old married couple.
Marcus and Yoshi: We're not a couple!
- While Izaya and Namie's relationship in Durarara!! began with hostility, they maintained a working relationship because of their confidence in the other's skills. Soon, they're comfortable enough to hang out together outside work (e.g. Namie cooking dinner for Izaya, and having meals together). Even though their interactions consist of mostly trying to annoy one another in some way, they probably know each other better than anyone else.
- Dragon Ball:
- Free! has Haruka and Makoto. The latter is frequently seen taking care of Haru, saying exactly what he thinks and knowing just how to convince him of something. The occasional bickering, while quite mild, is also present. In recent episodes though their relationship starts to show signs of slipping into other territories.
- Kyo and Yuki are called out on this (word for word) by Shigure in Fruits Basket. They're both displeased with the comment.
- Highschool of the Dead: It takes awhile for them to get there, but it's clear that Hirano and Saya are made for each other. By chapter 29, it's gone beyond the point where Everyone Can See It, to the two of them practically being Alice's foster parents.
- In K, Saruhiko and Misaki, whenever they're not at each others' throats. The audio dramas add a lot more of this between them.
- In Teasing Master Takagi-san has an adorable "rivalry" with his cute classmate, with them each trying to get the other to react or blush. They aren't quite at the point of being an Official Couple, but the rest of their class thinks of them as such. They do reach that point, however, as there is a spinoff series set ten years later in which they're married and have a preschool age daughter, Chi.
- Not lampshaded in the animanga itself, but Yamamoto and Gokudera from Katekyō Hitman Reborn! do act like this
- In the Love Hina manga, when Keitaro decides to get a job, he suits up and all the girls laugh at him. Naru however, does up his tie, leading Kitsune to make this exact comment about them. Denials follow.
- Lovely Complex: Koizumi and Otani are accused of acting like this - after they're already together, surprisingly, but they still both get embarrassed.
- Konata and Kagami from Lucky Star are pretty good examples of this. Much of their dialogue consists of verbal jousting, and the barbs get quite vicious on occasion. You just know that both would happily give every organ in their body to the other if they had to.
- In Magical Record Lyrical Nanoha Force, Signum and Agito have a heated argument over Signum's decision to cut her hospital stay short, which ends with a mixture of affection and pouting. Apparently, five years were enough time for them to start acting like a married couple (even though the bond between a Lord and her Unison Device is pretty much just that).
- Mazinger Z: Kouji and Sayaka were like this. Once while they are arguing -and fighting- in the background, Shiro is fortune-telling. He notes the cards tell his brother and Sayaka are destined to be together forever.
- Since the very moment they met, the interactions between Hachiman and Yukino from My Teen Romantic Comedy SNAFU are basically the former making fun of the latter and explaining why his view on life is wrong as he tries to defend himself from her arguments. They have no problem acting like this in front of everyone who, one way or another, conclude that the two get along just fine.
- Nadia: The Secret of Blue Water: From the moment Jean and Nadia find Marie, they become an almost familial unit - with the two of them essentially acting as her guardians. Marie even makes comments about how they are acting like a couple, whether they're discussing over whether to help the imprisoned villagers or not, or when they're about to go flying in a gyrocopter.
- Even funnier in episode 17 because when Marie teases Nadia about her feelings for Jean, she blushes and denies it. (But she approaches Jean anyway.)
- Naruto has one with the villains; both Deidara and Sasori and Kakuzu with Hidan bicker to one another like, as fans put, this trope. However, they take it in two different ways; Deidara and Sasori, being artists, bicker about their type of art (apparently often), even when the situation at hand has nothing to do with it. Kakuzu and Hidan, on the other hand, already hate each other, so all they need is one reason, and they're very likely to go off on one another and spend a pointless amount of time doing so.
- Neon Genesis Evangelion:
- Shinji and Asuka. The above Running Gag about Nadia and Jean was parodied by Toji about them in episode 17.Toji: What's this? Married couple fightin' again?Dub
(Entire class laughs. Both assume Luminescent Blush.)
Shinji & Asuka: It's not like that! Dub
- Shinji and Asuka double on this score in the Lighter and Softer manga spinoffs. There, Asuka's rage level and Shinji's Extreme Doormat level are both turned down, so there's more arguing and more friendship at the same time. They're always together, care for each other deeply, and... never stop griping at each other. (Add to that Asuka crushing on Shinji, Shinji not noticing, and that being the cause of Asuka's more canon-Asuka-ish moments.) It's still Toji who jokes about it; he refers to them as "the newlyweds" more often than he actually uses their names.
- When Kaji arrives late and somewhat disheveled for a wedding, Misato first criticizes him for his tardiness, then for not having shaved recently, before finally correct his loose tie. When Ritsuko comments on this behavior between them, pointing out that they act much like a married couple, Kaji is amused, Misato is not.
- Shinji and Asuka. The above Running Gag about Nadia and Jean was parodied by Toji about them in episode 17.
- Yato and Hiyori act very much like a goofy husband without a job and his nagging wife, with Yukine acting as their surrogate child. They argue a lot, but it's clear how much they care about each other.
- Kofuku and her Shinki Daikoku also aren't married, but they surely seem like it since they have been together for centuries and they get along very well despite him getting fed up with all the trouble she causes as a poverty god.
- Nami and Zoro from One Piece, almost constantly due to their hotheaded temperament. This happened quite often until the timeskip onwards, when they seem to have fewer interactions between each other.
- Gilbert and Alice have the tendency to act like this. All the time. They can hardly have a serious conversation without making some sarcastic retort to the other. Oscar even made the comment that "They get along well enough to bicker".
- Elliot and Leo also have the tendency to bicker over various things, and some of these bickerings may escalate to an outright fight with a lot of fighting and throwing of various nearby objects. Despite this (more like because of), they're still best friends.
- Patlabor: While the relationship between Captains Gotoh and Shinobu is strictly professional, they fit the trope to a tee. Their bickering rarely goes beyond snarking, and they relate as if they've known each other their entire lives. This is best seen in "The SVU's Longest Day" in the OVA continuity, and the entirety of the "Two in Karuizawa" episode in The Mobile Police/New Files continuity.
- Sayaka and Kyouko, of Puella Magi Madoka Magica, evolved from bitter rivals to this by the time of the Drama CDs and The Movie. They could be argued as Vitriolic Best Buds, but that's certainly not how the fandom sees it.
- Ranma ½: This observation is what gets Ranma and Akane engaged. Even their classmates notice."Ooo! A lovers' quarrel!"
"Practically married already."
- Some of Rei and Usagi's arguments are petty like this in the Sailor Moon anime, whether in or out of their superhero roles. Whenever the friend group meets up at Rei's house, there is a 99% chance that Rei will be telling off Usagi for snooping around her bedroom (and, in one instance, Rei tries to wrestle a comic book out of Usagi's hands in fear that Usagi would get tear stains all over the pages) or behaving "too Usagi" and giving her second-hand embarrassment, but it's clear that the two girls are good friends, respect each other and would help each other out, no questions asked.
- Soul Eater:
- Maka and Soul. They are very comfortable around each other, they live together, have the occasional lover's spat and Snark-to-Snark Combat and can read each other well. Arachne even comments on of the fights they had as entertaining.
- Black☆Star and Tsubaki are all but Happily Married. They are even raising a kid together!
- In Tanaka-kun is Always Listless, Word-for-word, this is Tanaka's picture of his relationship with Ohta and the apparent reason for its stability.
- Mentioned about Yusuke and Kuwabara in Yu Yu Hakusho. Botan even has an Imagine Spot dedicated to it.
Like An Old Married Couple / Anime & Manga