Adrienette

Adrienette is the het ship between Marinette Dupain-Cheng and Adrien Agreste from the Miraculous Ladybug fandom.

Canon
They have crushes on each other. Ladybug's secret identity, Marinette Dupain-Cheng, likes Adrien Agreste, thought not Chat Noir. Adrien Agreste is secretly Chat Noir and has a crush on Ladybug but not Marinette.

They are part of the "Love Square": LadyNoir (Ladybug/Chat Noir), Marichat (Marinette/Chat Noir) and Ladrien (Ladybug/Adrien).

Chat Noir is in love with Ladybug since the first day they met (as shown in Origins Part 1 and 2), he always flirts with Ladybug during their missions, however she always rejects him and takes his advances as a joke due his flirtry nature. In season 2 Ladybug discovers that Chat's feelings for her are serious, so she tells him politely that she doesn't want to lie to him and that there is another guy she likes. Showing that she truly cares about him and doesn't want to hurt his feelings.

They are great friends and a very good team, having a good chemistry, being able to defeat villains easily when they are together, they always joke around and make puns. Despite of this they have had their differences, specially when Chat Noir wants to know about her true identity, Ladybug claims that knowing their true identities would be dangerous for both.

On the other side when Marinette first met Adrien she wasn't very fond of him, specially because she tought he was as bad as Chloe, but when he lend her his umbrella and apologized for a misunderstanding she fell in love with him. Marinette is unable to pronounce words correctly when she is around him, she gets very nervous and clumsy, Adrien always treats her nicely and respectfully, he always praises her specially because of her talent designing clothes but he only sees her as a good friend. In the second season even tough Marinette is still nervous with him she is capable to talk more and they seem to be forming a closer friendship.

Season 1
In the episode "The Bubbler" Marinette makes a scarf for Adrien's birthday, but when she sees that he thinks his father was the one who gave it to him she decides not to say anything because he looks very happy.Putting his happiness over hers.

In the same episode when the heroes are trapped in the bubble and Ladybug yells:Do you want to stay in this bubble forever? Chat Noir answers with a grin



In "Mr. Pigeon" Adrien compliments Marinette when he looks at her sketchbook,later when she wins the contest he congragulates her,holding her hand and winking at her.

In "Stormy Weather" Chat Noir holds Ladybug's hand for a very long time,she responds with an irritated look.

In "Timebreaker" Chat Noir gets between Ladybug and Timebreaker to protect her from the attack

In "Copycat" when Ladybug wants to discover the fake Chat Noir,he tells her to ask the Fake Chat Noir about their love story,stating "Have i ever lied to you Bugaboo?"

In "Lady Wifi" Chat Noirs suggests Ladybug that they may know each other in their civilian forms,she says that she doesn't think so.

When Ladybug is about to detransform Chat Noir stops her,saying that he wont tell anyone about her secret.Ladybug says"Nobody must know who we really are,not even us" and gets into a closet,Chat Noir is tempted to open the door but finally leaves,not wanting to betray her trust.

In "Evillustrator"Chat Noir heavlily flirts with Marinette, calling her "Little Lady",flexing his muscles and kissing her hand. Later in school Adrien asks Marinette what she thinks of Chat Noir.

In "Rogercop" When Chat Noir is hanging from a lamppost he tries to kiss Ladybug like in the movie Spiderman(2002).

In "Dark Cupid" Chat Noir tries to tell Ladybug his true feelings,but he gets controlled by Dark Cupid.Ladybug kisses him to free him.

In the same episode,Adrien writes a letter to Ladybug but he tosses it in the trash can,Marinette finds the letter and thinks he wrote it for her. She writes a letter to answer him,but forgets to sign it,making him think that Ladybug wrote it.

In "Horrificator" Adrien pulls Marinette close to him in order to kiss her for a scene in the movie they were making,but they were interrupted by Chloe.

In "The Mime" when Adrien's bodyguard hits the brakes Adrien and Ladybug stare at each other blushing until they are interrupted by the villain.

In "Princess Fragance" when Marinette is about to fall from the school stairs Adrien catches her.

In "Origins Part 1" when  Ladybug and Chat Noir frist met they were accidentally wrapped together by Ladybug's yo-yo.

In "Origins Part 2" Ladybug starts doubting herself and wants to give up, Chat Noir encourages her.After Ladybug's speech Chat Noir is surprised by her courage saying "Whoever she is behind that mask i love that girl".Showing that he fall for her almost instantly.

Marinette was mad at Adrien because she tought he was putting the gum on her seat,explaining that he was trying to remove it and that he have never been in school before, he lends Marinette his umbrella,Marinette accepts it and then the umbrella closes on her,making both laugh.After this Marinette is unable to talk to him and gets very nervous,in the scene we can hear a thunder in the distance,this can be related to the French expression "Coup de Foudre"(Lighting Stroke) which metaphorically means "Love at first sight".

In "Animan" Chat Noir hugs Ladybug after seeing she is safe.

In "Simon Says" When Adrien sees Ladybug he blushes and they both act very shy with each other. Also when Ladybug sees a picture of Adrien's mom they both say "She's got your smile" at the same time.

In "Guittar Villain" Adrien asks for Marinette autograph on the album cover she designed.

In "Antibug" Ladybug and Chat Noir stare at each other with an smile.

In "Kung Food" Adrien encourages Marinette when she feels that her Chinese uncle may not like her,he also helps her to communicate with him as he speaks Chinese fluently.

In "Gamer" When Adrien and Marinette touch hands by accident they both seem very nervous.He  tried to protect her pushing her to the floor and falling over her,

When Adrien says "You are amazing Marinette,I am so lame compar​​​​​ed to you"claiminng that Marinette is better at video games,she gives him a bracelet,explaining that is her "Lucky Charm" and is her source of good luck.

Season 2
In the Christmas Special Adrien says "she is so amazing" when he sees that Marinette sent him a present.

In "Prime Queen" Chat Noir discovers that Ladybug kissed him thanks to the rumours of a relationship between them.He spends the rest of the episode trying to kiss Ladybug again and teasing her,however she keeps saying "I was saving you!Not Kissing you!"

They also tell the villain that they in fact have a relationship,but just to trick her and defeat her.

In "Despair Bear" Adrien and Marinette are dancing vert closely. Also at the end of the episode Adrien teases Marinette saying " Your cooking is as good as your dancing" ​​​​​​.

In "Riposte" Adrien helps Marinette with some fencing techniques,he laughs when she accidentally calls him "handsome".

Ladybug helps Adrien to run away from Riposte,when Ladybug leaves Adrien blows a kiss at her. When Kagami asks Adrien if he likes Marinette he answers nervously "Yeah, she is a very good friend."

In "Befana" Adrien gives Marinette a bracelet for her birthday,similar to the one she gave him in "Gamer"

In "The Dark Owl" Chat Noir trusts Ladybug and both detransform(without looking at each other) in order to trick the villain.

In "Gigantitan" Marinette tries to plan a date with Adrien,after she fails she tries to ask him directly,but as always she is unable to form a coherent sentence. Adrien offers her a ride home but she impulsively declines.

In "Glaciator" Ladybug doesn't show up for a surprise that Chat Noir had for her, he is heartbroken,but when he sees Marinette in her balcony he goes to talk to her;revealing his true feelings for Ladybug and showing her the surprise instead.

As the villiain doesn't attack couples,they both fake a relationship,Chat Noir at first refused claiming that he" Doesn't like to play with people's feelings" still mad at Ladybug.

After defeating Glaciator Ladybug apologised to Chat Noir and confessed that she likes another guy, Chat seemed sad but he kindly accepted this,gaving her a rose and a kiss on the cheek.He still hopes that she will love him some day.

In "Gorizilla" Adrien bumps into Marinette when he is running away from his fans,when they reach to the cinema Adrien says that he had never been with a friend in the movies before. He also shows Marinette that he still has her "Lucky Charm". Adrien also demonstrates that he completely trusts Ladybug,as he waits  for her  to rescue him while falling from a building.

In "Zombiezou" When Chat Noir gets controlled by the zombies Ladybug seems way much worried than she was when she tought Adrien was being controlled. She even holds Chat's face as he encourages her to rescue the other people.

In "Syren" Chat Noir confronts Ladybug because he thinks she doesn't trust him enough and is hidding something from him.He even threatens to quit being Chat Noir,but when Ladybug sends Master Fu to talk to him he is happy and sees that Ladybug does trust him.

In "Frightningale" Adrien and Marinette are chosen to portray Ladybug and Chat Noir in a music video,they are both nervous because they identities are in risk. At the end of the episode Marinette tells Adrien that he couldn't portray Chat Noir properly as he is cooler than the hero.Adrien responds "You don't look a think like Ladybug either,i think you are funnier than her" and they both laugh.

In "Troublemaker" after she almost detransformed Chat Noir tells Ladybug "I already know who you are" seeing her shocked face he says "The girl of my dreams".

When Marinette makes up an excuse to Adrien for having all those pictures of him he asks "Are you lying?" and leans over her with an smirk,acting pretty much as he does when he is Chat Noir .She claims that she doesn't feel that way towards him, Adrien laughs saying  he is only joking an invites Marinette to a photoshoot. He smiles and says "I am glad you are one of my fans",however in the French dub he says "I am glad you are my friend" instead.



Fanon
Marinette often calls Adrien 'Kitty Cat' or 'Kitty' or some other cat related nickname.

Cat Noir calls Ladybug many nicknames including 'Bugaboo', 'M'Lady', or 'LB'

The most popular ship in the fandom is Marichat,they are often portrayed as being very flirty towards each other,however in the canon there aren't many interactions between them.

Fandom
AO3