- Averted in Bravely Tangled Up With Dragons—Flynn asks Hiccup where his girlfriend went, referring to Merida, but Hiccup narrowly avoids saying this as Flynn takes a tree branch to the face, swung by none other than Merida.
- Gohan and Mayu in the Elfen Lied/Dragon Ball Z crossover Elfen Lied Children Of Destruction so obviously have feelings for one another, to the point that one of the minor side characters points it out, with this trope as the result.
- In Equestrylvania, this is Twilight's reaction when her friends see Roaring Yawn's picture and tease her about him.
- Jonathan has the same reaction when people suggest this relationship between him and Charlotte.
- When Luna suggests Celestia has a crush on Julius Belmont, Celestia quickly changes the subject... but doesn't deny it.
- This is also Rainbow Dash's reaction whenever anyone points out the obvious Belligerent Sexual Tension between her and Shatterstorm.
- Stated quite emphatically in Fallout: Equestria by both Calamity and Velvet Remedy in Stable 29. Littlepip doesn't buy it.Littlepip: By the Goddesses, could they be any more obvious!
- Also an example of Self-Fulfilling Prophecy, as part of the reason they hooked up is because Littlepip thought it was inevitable.
- Doctor Whooves The Series has the Doctor and Twilight, his companion. Or, shall we say, more than companion?The Doctor: No, Twilight and I are strictly... That is to say, she's a sweet girl but... No. While I do care about her well-being, I am not—
- In the My Little Pony: Friendship Is Magic/The DCU crossover series Justice League of Equestria, Rainbow insists that Thunderlane is not her boyfriend, despite him being cute, a good conversationalist, and cute.
- Harry and Lash in the The Dresden Files/My Little Pony: Friendship Is Magic crossover My Little Denarians.
- In the Muv-Luv Alternative/Armored Core crossover Project Ignition, this is common enough with Adler and Selene, seeing everyone sees them as a couple. However, pressing the issue is dangerous as it appears to be one of Adler's Berserk Buttons. Sort of, because usually pressing his Berserk Button actually causes violence—in this case, it's just yelling.
- When Spike claims Amy is Sonic's girlfriend in the My Little Pony: Friendship Is Magic/Sonic Generations crossover Sonic Generations: Friendship Is Timeless , Sonic quickly places his hands on his hips, telling him she is not (even though Amy thinks otherwise).
- And when Gilda claims Sonic is Rainbow Dash's girlfriend, Rainbow Dash quickly retaliates.
- In Child of the Storm, Harry and Carol insist, repeatedly, that they are not attracted to each other, it's merely a mutual case of Stupid Sexy Friend, they are nothing more than close friends, and that their Sleep Cute was totally platonic. They are utterly baffled about/irritated by the fact that everyone thinks that they have UST going on. Which they do. Lots of it. Admittedly, Harry has considered the idea once or twice, and Carol's eyed him up a couple of times, but given how many boys drool over Carol, he understandably doesn't want to push things. Plus, they're both young teenagers and not in a rush.
- Three More Things! has a Running Gag where Jade insists that Hsi Wu is not her boyfriend, even though Everyone Can See It. There's also a variant of saying "I'm not his Mistress" whenever someone makes a joke about her controlling him now that he's her familiar. Though the boyfriend one gets dropped after the Chosen One arc, when she stops denying her feelings for him.
- Neither a Bird nor a Plane, it's Deku!, the proprietor of a local restaurant in Nagoya jokingly asks if Momo finally found a boyfriend when she and Izuku walk in the odor. The thought of being mistaken for a couple alone makes Izuku's brain do somersaults, while Momo flatly denies anything between them other than a mutual admiration for Princess Shazam. Izuku then feels like he should be a lot happier about that then he actually is.Jomu: Oh, and you got company, too. Little Momo finally manage to snag herself a boyfriend?
Izuku: H-Huh?! Y-Y-Y-Y-You've g-g-g-got-
Momo: Hardly. We met on the street, bonded over a shared love for Princess Shazam, and now we're getting lunch. That's all.
- What Daichi says about Haruhi in the Rosario + Vampire/Kamen Rider Spirits crossover Showa & Vampire. Justified due to his girl problems.
- The Many Dates of Danny Fenton (Danny Phantom Western Animation, TV Series, and Comic Books.): At the carnival, Danny tries to explain that Katie Kaboom is not his girlfriend when he's gifted a pass for all the rides, but is interrupted by Katie herself.
- In A Gun to Love's Head despite the fact that Light and L insist that they aren't lovers Mello refuses to believe them until it becomes true.
- A Running Gag in I Won't Say:Light: Hello, everyone, I'm Light, L's boyfr—
L: My co-worker!
- In Point of Succession Light gets annoyed when L proclaims him to be "my boyfriend" after they slept together once.
- In Fire Emblem Awakening fanfic Pretender, Frederick has this reaction when Chrom tells him that he and Robin could adopt after Frederick complains that his mother pesters him for grandchildren. However, this is because Frederick wants neither to force Robin into a relationship nor to break off their friendship.
- Draco towards Ebony in Ebony Dark'ness Dementia Raven Way vs. Canon. Justified since, well, she isn't. Good luck telling her that, though.
- Harry about Hermione in chapter 75 of Harry Potter and the Methods of Rationality.Harry: And I. Am. Not. Her. Boyfriend!
- Hermione followed suit a few lines later.
- In Moratorium, Harry insists she isn't smitten with Tom. Neither Hermione nor Tom are fooled.
- In the Harry Potter Peggy Sue fic Oh God Not Again!:Remus: Nymphadora is not my girlfriend!
Harry: She lets you call her Nymphadora.
- When Hermione is forcing Draco to take back his insults in A Very Potter Musical, Ron chimes in with this:Ron: And that stuff about Hermione being my girlfriend, that's not even a little bit true!
- In Family Harry and Susan keep saying this about each other.David: Alright team, remember what we been practicing for the last few weeks. Harry, like we discussed, okay? Just fly around doing crazy stuff like you usually do. The 'Claws will be too distracted to pay attention to the quaffle, and if you get the chance, grab the snitch; oh, and please, for the love of Merlin don't go and kill yourself trying to grab the damn thing. It's just a game, after all. And I don't fancy your girlfriend beating me up 'cuz you got injured!
Harry: She's not my...
David: Yeah, right, keep telling yourself that kid.
- In Assumptions: The first sentence out of Rainbow Dash's mouth when Caramel introduces her to his siblings is clarifying that they aren't an item. His family exchanges bemused expressions, but they drop it when they decide to let the two figure it out on their own.
- Dusk and Tootsie Flute have some of these moments in the My Little Pony: Friendship Is Magic fanfic Luna The Match Maker, until some pushing and manipulating by everyone around them convinced them to have a Relationship Upgrade.
- In the My Little Pony: Friendship Is Magic fanfic Within And Without, Rainbow Dash is too afraid to publicly admit her feelings for Pinkie Pie until she's called out on it.
- Twilight's reaction in My Little Pony: Friendship Is Magic fanfic Night's Favored Child when Nightmare Moon jokingly suggests this about her relationship with Orion.
- Applejack's reaction when Granny Smith calls Dusk AJ's boyfriend in My Little Pony: Friendship Is Magic AU fic The Unexpected Love Life of Dusk Shine.
- Between Green Grass and Twilight in the My Little Pony: Friendship Is Magic fic Traveling Tutor And The Librarian.
- Deidara denies being in a relationship with Hidan in chapter ten of Naruto fic Gender Confusion. Guess what happens a few chapters later?
- In the Naruto AU Konoha No Senkou Arashi, Sasuke claims this about Naruto when Inari points it out.
- Hatake about the blacksmith's daughter in Naruto fic Mission Accomplished, also Punctuated! For! Emphasis!.
- Used (sometimes word for word) by Naruto whenever Jiraiya teases him about his relationship with Hinata in the fanfic Team 8.
- A Crown of Stars: At the beginning of the story Asuka denied Shinji was her boyfriend and vice versa. One of the reasons is they did not know where they stood with each other and the only thing they were certain about is they did not want to remain apart. Other of the reasons is they were in denial. Later they got together—after a fashion—but Asuka was unsure about her own feelings for a while, so she denied it until her doubts disappeared.
- In chapter 30:Ching: No, I didn't peek in the window and see you making out with your boyfriend
Asuka: He is not my boyfriend! I mean we haven't talked about it I don't know
- In chapter 30:
- Advice and Trust: Asuka constantly denied that Shinji was her boyfriend before getting together. Ironically, she hates having to put up this act all the time in order to keep her relationship secret after she and Shinji became a couple.
- In chapter 5 Touji called them "husband and wife". Cue red faces and denial in unison.
- Rei does this in chapter 11 regarding her relationship with Kaworu. Asuka just rolls her eyes and comments "Boy, those reflexes you learned off me are a bitch". Given Asuka's own experience, she's able to get Rei to admit that Kaworu is her boyfriend less than a minute after this exchange.
- The Child of Love:
- Asuka several times insisted there was nothing between her and Shinji, he was just a friend and she was not his girlfriend and will definitely not be his wife. Nobody was convinced.
- In chapter 4:Kaji: (in front of Asuka) And why not talk about the future, Asuka? Or should I say Ikari Asuka Langley?
Asuka turns a vivid shade of red while Shinji tries to hide himself under the table.
Asuka: Kaji-san, please understand that there's nothing between me and stupid Shinji, okay?
Everyone is grinning and staring at them, not really convinced by Asuka's words.
- Children of an Elder God: In chapter 6 Asuka claimed she wrapped her arm around Shinji's earlier because she was trying to make Kaji jealous and she did not like her fellow pilot. Of course, everyone disregarded her claims.
- Evangelion 303: In chapter 5 Asuka spent a looong time berating Shinji, complaining about that idiot not calling her, not noticing that she was worried about him and making excuses for staying in his house and sleeping in his bed. Jessika asked her if idiot was German for boyfriend. Asukas answer was as angry as predictable:Asuka: WOULD YOU SHUT UP?
- Once More with Feeling: A girl asks Asuka if Shinji is her boyfriend. When Asuka claimed they were Just Friends, the girl suggested maybe she would get him all for herself, then. Asuka chewed her head off.
- The Second Try provides the next examples:
- In order to keep the Masquerade, Asuka is forced to protest that Shinji isn't her boyfriend whenever someone suggests that she likes him, even though they got married several years ago -from their perspective-.note
- According to Misato, she and Kaji haven't got back together. And they are NOT dating. They are merely hanging out together. And having sex. But he's not her boyfriend.
- Subverted in Neon Genesis Evangelion: Genocide. When Asuka asks Shinji if he's dating Rei, he denies it, knowing that the relationship he has with Rei is both something else and more than a little complicated by the fact that she died and came back to life as another person. He also realizes that these reasons are far too complicated to explain to Asuka, so he settles for telling her that Rei simply isn't interested.
- The Ikaris: In this story where Shinji and Asuka get drunk and wake up married, it's "He is not my spouse".
- In the Pokémon fanfic Cindy's Story, during their Cyndaquil and Quilava years, this was the case with Cindy and Ty. In their Typhlosion forms, they are basically
- Amber has denied that she has a crush on Sombra.
- Happens with Ruby and Sapphire in the Pokémon Adventures High School A.U. A Miscellaneous Tale of Night and Day:Gold: Ah, you two are like an old married couple
Ruby and Sapphire: Stop saying that!
- This also happened with Red and Yellow once, but in a much more perverted sense.
- In the Pokémon Mystery Dungeon fanfic Brave New World, Ash and Misty vocally claim not to be a couple, in spite of three Pokemon who consider them in specific terms to be their parents.
- Pikachu and the ninja Buneary get this a lot too.
- Almost every couple in Pokémon fanfic Overcoming The Clashing Tides.
- Jay and Ashley have admitted they do have feelings for each other but whenever an outsider points this out... Cue, death glares and denials.
- It doesn't happen often with Bronze and Lizzie, but it's there.
- Missy denies having any feelings for Dan in the early couple of chapters of Pokémon: Storm Clouds. She's not fooling anyone.
- In Pokémon fanfic Sword and Shield there's a two-way version between Mewtwo and Brenda, who have been growing closer and closer over the series but refuse to acknowledge it.
- In Pokémon Adventures fanfic series The Forever Trilogy, this occurs nearly every chapter with Goldy and Sapph.
- Sapph is trying to change this, but with Goldy, well
- Congrats, you have succeeded, Sapph! Goldy/Sapph is now canon!
- Crimson has to say this sometimes about Indigo.
- Crim even said this to Navy when Navy called Crim Indi's boyfriend.Crimson: "SHE IS NOT MY GIRLFRIEND!"
- Crim even said this to Navy when Navy called Crim Indi's boyfriend.
- Sapph is trying to change this, but with Goldy, well
- In the AU Pokémon fanfiction series The Road You Choose, the first part, The Mystery of Aura, has Kidd Summers ask if Misty is Ash's girlfriend, cue a rapid denial from both. Then fast-forward to the end of the second story, The Master of Mirage, set a couple weeks later chronologically; Misty refers to herself as Ash's girlfriend.
- A sidestory of Pokémon Reset Bloodlines has Misty explicitly state about Ash: "He's a boy, and he's my friend, but he's not my boyfriend." At this point, however, it's pretty clear that she's attracted to him.
- In the Power Rangers fic Of Love and Bunnies, Tommy and Kim frequently do this.
- Subverted when a dream-interpreting fortuneteller assumes Adam is Kira's boyfriend (mostly because Kira was sitting on Adam's lap at the time). Since they aren't even remotely a couple (dating other people, vast age difference, barely know each other), they're rather confused by the assumption.
- Shouted word-for-word by Sean after being asked about Maria in Power Rangers GPX.
- The More Things Change: Ukyou and Ryouga repeat over and over they're not a couple. Nobody believes them.Yuka: And given all things equal, I'll bet on Ranma.
Ukyou: You guys really don't think Ryouga has a chance?
Nabiki: Defending your boyfriend, Ukyou?
Ukyou: He is NOT my boyfriend!
- White Sheep (RWBY): Weiss' sister Winter comes in on the tail end of a conversation that makes it sound like Weiss and Jaune are dating. Weiss tells Winter that Jaune is her partner, but not her partner partner, then realizes that sounds fake and tries to recover. Winter is amused, but believes her. Unfortunately, the thing they were actually talking about was the illegal incident their teams were involved in the previous night, which Winter is in charge of investigating. So Weiss has to claim Jaune is her boyfriend as a cover.
- When Raijin asks Haruto if Arisu is his girlfriend in Persona Ultraviolet, Haruto quickly denies it.
- Aigis says this about Minato in Persona 3/Persona 4 fanfic The Fools Turmoil.
- X-Men: The Early Years: In "Chemical Imbalances, Kissing, and Other Sappy Things", Scott reiterates Jean Grey is not his girlfriend.Someone must have picked up on the other side of the line Jade had dialed. "Shelly, Scott's here to see Katy. Can I send him up? He brought a..." — Jade winked at her and Jean decided right there she was going to like this woman — "... a female friend with him today. Can I send her up too? Yes, it appears Slim, does indeed have a girlfriend. Some of the older girls around here are going to be heart-broken."
"She is not my girlfriend," Scott protested loudly, blushing a little, "She's a close friend, I go to school with."
Jade covered the mouthpiece of the telephone and replied, "Shelly said she heard that and you are protesting way too much for her not to be your girlfriend. 'Bout time you got yourself a life." Scott groaned and blushed a little redder. Jade chuckled at that display and took her hand off the mouthpiece. "I'll send them both right up." She hung up the phone, gave Jean a wide grin and offered a hand. "Hi, I'm Jade and regardless of what Shelly might tell you later, I run this nut house."
"Hi, nice to meet you, I'm Jean," she responded, shaking the older woman's hand. "Otherwise known as 'not-Scott's-girlfriend.'" That response pulled another groan from Scott.
- In Reconciliation, a Katawa Shoujo fanfic that takes place after Hanako's bad ending, Hanako says this about Sho, her publicist and the closest thing she has to a friend as of the start of the fic. They eventually become a couple.
- In the Courage the Cowardly Dog fanfic All Things End, Computer teases Courage about a dog he met in which he responds with this. He gets his revenge on Computer when Nina comes into the picture, playing up the same thing.
- In the BIONICLE fanfic series Xaterex Multiverse Storyline, Shardak has a moment of this with Nightwatcher in Eternal Darkness, regarding Valkyria. Of course, Nightwatcher was right.
- When Heimdall implies that Ayra is tied romantically to Nico in the Percy Jackson and the Olympians fanfic Aska, Nico answers like this for her, while laughing at the ridiculous idea.
- In Goosebumps Adventure Courtney and Justin both insist this, even though Everyone Can See It.
- In The Settlers: Rise of an Empire fanfic The Mathematics of Deciet, between Marcus and Alandra. Suuuure she isn't, Marcus.
- Sherry and Sadiq after England and France attempted to get them to hook up with each other in Axis Powers Hetalia fanfic The Fanseries.
- Waldo on Carmen in Where On Earth Spies.
- In Spongebob Squarepants trollfic One Less Lonely Gurl, Spongebob had to explain that C'ren wasn't his girlfriend even though he had her stay over at his house for the night.
- In Jackie Chan Adventures AU fic Queen of All Oni, Jackie really wishes people would stop calling Viper "his girl".
- In the Danny Phantom AU Resurrection, Danni and Sam until the Relationship Upgrade.
- When Kira first gets a crush on Kid in the Soul Eater fanfic Black And Gold, he immediately lets her down easy by informing her he's engaged (something L.J. avoided doing until the last minute). L.J. then claims she wouldn't care if Kira did pursue a relationship with Kid, citing the trope name.
- Played as straight as possible in the third chapter of the Full Metal Panic! AU fic Full Metal Panic Bonds, when Tessa very vocally denies that she has feelings for Garon. That stance lasts about two minutes.
- Laura and Yussef through much of the Lyrical Nanoha AU Academy Blues.
- Allison does this regarding Noah in Endless Waltz.
- Almaz says this about Sapphire in Disgaea fanfic Fail to the King!, leading Aria to amend her previous statement:Aria: His girlfriend without benefits.
- Averil, about Zack, in the Tsubasa -RESERVoir CHRoNiCLE- fic Freefall. No one believes him. Caleb has this regarding Finn later on, and eventually stops denying it since it's easier than trying to explain.
- This happens a lot to Lion-O and Jagra in the Thundercats 2011 fanfic Heroes of Thundera.
- Peter Hawthorne and Lila Kirk early in the second story of International Academy of Hetalia Fanfiction.
- Beast Boy's reaction when Robotman refers to Jinx as his girlfriend in Teen Titans fic Jewel of Darkness.
- Chloe says this about Bobby in Chapter 6 of the Audition Online fanfic Learning From Nightmares.
- Uttered insistently by both Dr Drakken and Shego to anyone that will listen toward the end of Kim Possible fanfic Maslow. No one believes them.
- In the Yu-Gi-Oh! 5D's fanfic Shadowchasers, Gears repeatedly denies that Mistle is his girlfriend. Of course, none of teammates (and Jalal) believe him.
- In Star Wars Paranormalities Trilogy, Zolph tends to have this reaction when Grein assumes he and Dynn were in a relationship. At least, that was the case before Dynn's death.
- In the Super Robot Wars High series, Yzak Joule and Shiho Hanhenfuss keep claiming to anyone who will listen they are not a couple or have any feelings for each other aside from disdain. No one believes them.
- In Super Smash Brothers Guardians Arise, Link keeps saying Zelda is not his girlfriend, while Zelda keeps refusing to admit she has feelings for Link in the beginning of the story.
- In the Mahou Sensei Negima! fic Taken Day By Day, Setsuna can't seem to convince 3-A that she and Tsukuyomi are not in a relationship.
- In the Rosario + Vampire fic Thawing Permafrost, this is played straight by Dan and Mizore in the Maid Cafe.
- Sonic in The CRONIES:Sonic: WHAT?! Amy's... NOT... MY FLOOZY!!!
- In The Legend of Spyro: A New Dawn, Pyrus and Delilah do this at the same time when one of Kaze's Quirky Mini Boss Squad say that Delilah is Pyrus' girlfriend. In this case, they're telling the truth, Delilah has already said she can tell someone else is meant for Pyrus and that she is about 200 years older than he is anyway.
- In Bleach AU fic Winter War, Kon claims that he and Mashiro are "just friends." Kensei is not convinced.
- On a much grimmer note, there's also this exchange, after Grimmjow, Kazeshini-controlling-Hisagi, and Hanatarou discover Nemu Prime:Grimmjow: You're in a mood to fight. Was she your woman, or something?
Hisaginote : No. Not her. It's just—some things are monstrous. Even by your standards, maybe.
- On a much grimmer note, there's also this exchange, after Grimmjow, Kazeshini-controlling-Hisagi, and Hanatarou discover Nemu Prime:
- In Boys und Sensha-do!, Akio says this when his mother asks if Miho is his girlfriend.Akio: MOM! Miho-chan's not my girlfriend... she's my sensha-do team's captain.
- A subtler example happens after Akio ends up taking care of Miho while she's recovering from her injury in the match with Anzio, Senmonka comes to see him, and asks him what he and Miho did together. Akio says that he and Miho "spent some time working on some organizational stuff for the team," which is only part of what they did. Senmonka then decides to ask if they did anything else, making Akio want to hit him, but Akio inwardly concedes that the entire arrangement isn't so bad.
- Similarly, Tsubasa points out that Miho must be keeping Akio busy, but Akio points out that because of Miho's aforementioned injury, she has needed a lot of help. He then gets Tsubasa back by pointing out his relationship with Kazukonote , which Tsubasa can't deny.
- The Star Trek (2009) fanfic Written in the Stars revolves around this trope for the first part of the story. Fem!Kirk discovers from Spock Prime that he and her own Prime counterpart were married... and then the spirit of that counterpart gets stuck inside her head, and makes hints about the alternate pair's relationship whenever she gets the chance.
- In A Far Green Country, chapter 12, when Surad mentions "your girlfriend," Elden says, "She's not my girlfriend." Surad still believes that Nellas is his girlfriend.
- Ayame Ishikawa and Hikaru Nagai of Despair's Last Resort constantly make this claim in regards to each other. Everyone believes they're a couple, no matter how much they deny it, due to how close they are.
- In Slice of Souls!, Maria insists that she and Solaire are Just Friends after Gehrman starts to freak out at seeing them together. Gehrman doesn't buy it, which leads to Maria trolling him by saying she and Solaire already had "sessions" together. Maria's actually talking about piano and drums jam sessions, not sex.
- Cullen says this more than once about his colleague Evvy in the first installment of Skyhold Academy Yearbook. As Varric accurately points out in response, "She would be if you'd quit sitting on your hands about it."
- Natsuki and Yuri in the Doki Doki Literature Club Loops are both unwilling to engage in romance, primarily because of the nature of their baseline. This doesn't stop their friends from scheming to make them a couple. Once Yuri finds out Natsuki thinks of herself as impossible to love, she immediately counters by picking her up and kissing her—it helps that they were at a wedding at the time, and they have since started dating for real.