Based on Zoe-Oneesama's Tumblr comic Scarlet Lady which is my fave Ladybug fan content or tied along with LadyBugOut. Only there and the amnesiac Adrien in the episode Oblivion do I ship Adrienette. Also happy birthday to Zoe.
Marinette Dupain-Cheng was smiling as he was riding on the back of one of her boyfriends Luka Couffaine's bike as he had insisted on giving her a ride to school. He and Adrien Agreste had recently revealed their feelings to her and she was torn between them: the cute and nice Adrien and the cool but also dorky like her Luka. It was tough to think it through even after they had both assured her that they don't want to hurt their friendship with her no matter what she choose. It was Alya who stepped in after healing her dilemma had said that she can just date them both since she had two hands for the each of them. Luka and Adrien were fine with this as long as Marinette was happy and it was then their relationship happened over the weekend.
They had let their family know and they accepted it well: Anarka was quite over the top in her excitement, Marinette's parents and embarrassed her by saying that she had got them 2 sons in law; Juleka had likewise already claimed Marinette as her sister in law and Adrien's father... Marinette and Luka looked at him in sympathy when he just shook his head saying that he was too busy to get a chance to tell him. Marinette comforted him with a hug not really liking how her favourite designer was so cold to his own son. Pollen was more than happy about his Miraculous' owner's new relationship and said his queen deserved all the love that she gets.
Marinette kissed Luka on the cheek after she got off and Adrien was there to greet them as they posed together for a picture smiling which Juleka took with Adrien's photo. Luka and Adrien showed off their custom necklaces around their necks made by Marinette of two halves of a heart with "Marinette's heart" inscribed on them.
"Are you sure that you are ready for everyone to know about you three?" Juleka asked giving Adrien back his phone and they nodded without hesitation.
"I don't really care as much for father's opinion but he seems to like Marinette as an up and coming designer so I think he will give approval." Adrien said with a huffed voice which had them silent.
"I wouldn't want to hide being with Marinette at all; I would sing it with my soul." Luka said Adrien posted the picture on social media with the caption:
Me with Luka Couffaine and our amazing new girlfriend Marinette Dupain-Cheng!
They got in and as students saw the notice they began crowding Marinette and Adrien as they came in holding hands as they went to their classroom. There were students wanting to get a look at 2 3rds of the new couple as they heard the comments:
"Marinette scored herself with 2 cute guys!"
"Are you going to be modelling Marinette's designs now Adrien?"
"So are you going to be Marinette Dupain-Cheng-Agreste-Couffaine in the future?"
They ignored them and walked into class with Juleka not far behind them to see their excited classmates wanting to know the details.
"So Adrien, will you and Luka be fighting eachother to get the most out of Marinette's time?" Alix asked as Marinette glared at her while Rose was squealing about how romantic it was. Marinette was taken aback when she noticed Lila and Sabrina glaring at their direction while looking quite jealous.
She was shocked by this thinking that she was getting along with Lila and Sabrina was forming a good friendship with her while helping her start over from her toxic so called 'friendship' that she had with Chloe. Marinette's eyes widened when she noticed that Adrien went to get to his seat and their looks were going to his direction, so it was Adrien they were angry at?
"Can I please ask if Adrien has done something to anger you?" Marinette asked as they both shook their heads and there were laughter.
"Marinette, they are just jealous that Adrien and Luka got to you first!" Alya told her grinning as they ended up nodding slightly a bit embarrassed.
"You helped me be more truthful about myself and I still remember how in love that I felt when I heard you badmouth that terrible Scarlet Lady!" Lila said as Marinette was open mouthed wondering just could she possibly remember that since she was Volpina at the time. Marinette did remember that while she was telling the love struck Volpina that she hated Hawk Moth more than Scarlet Lady, that she a bit scared that Volpina was going to kidnap her as a bride for her comment alone.
"You've always been so nice to me Marinette and never held what I did for Chloe against me, even when I tried to steal your diary for her and lied my way into your room. You've been more of a friend to me than Chloe ever was and you are so amazing." Sabrina told her as Marinette didn't know what to say.
"I bet Luka and Adrien wouldn't mind if you wanted to date Marinette as well, if Marc is alright with Nathaniel wanting to go after Marinette as well." Rose suggested as Marinette, Sabrina, Lila and Nathaniel were now red in the face.
"Dupain-Cheng!" screamed an unwelcome voice as the entire class groaned in unison as they should have dreaded this reaction as Chloe came in looking angrier than they had ever saw her which was quite an accomplishment for her. "How dare you steal my Adrikins away from me! I could care less if you wanted to waste your time with that loser with the guitar as losers belong together, that do you think that I was going to sit back and let you keep them both for yourself when Adrien is mine!" Chloe thundered as the class glared at her.
"Watch what you say about Marinette or my brother!" Juleka said speaking up using courage that almost never comes to her.
"Adrien is not a prize to be won or yours to claim Chloe; it's his choice who he wants to be with!" Marinette told her as Chloe smirked getting out her phone.
"Managed to get a picture of your little notebook when you had it open and wasn't looking Dupain-Cheng." Chloe said showing off a drawing of a love heart around Chat Noir as Marinette was open mouthed at that picture being shown to the class and red in her face but while angry at Chloe, Adrien couldn't help but smile a bit at the picture. "So do you want to claim the mangy cat as well Dupain-Cheng with how pathetic you are?" Chloe snarked looking victorious but Adrien spoke up.
"Nothing wrong with having a celebrity crush Chloe, I have one on Marigold myself." Adrien said taking out his notebook and showing that it had a photo of the Bee heroine Marigold with a heart drawing around it as Marinette was redder in the face while Chloe was open mouthed.
"Nothing wrong with that dude, she is pretty much the best hero that Paris has now!" Nino said with everyone smiling and nodding in agreement besides Chloe and Marinette. Marigold has with her fighting tenacity, warm comforting words to Akuma victims after they were being freed and happy to help civilians in need made her a more popular hero. She had given interviews and how valued Chat Noir was as a partner and helped Paris realise how hard he had to fight against the Akumas.
"Excuse me but Scarlet Lady is by far Paris' best hero!" Chloe retorted by Alya got out her phone and showed the poll that the news station had made asking Paris citizens who they liked the best.
Marigold was in the lead followed by Chat Noir, Maotif the one time temporary Chat Noir was in 3rd place and in a very distant 4th place with barely 1% vote was Scarlet Lady. "Paris disagrees Chloe." Alya told her and Chloe was furious. People were being interviewed and the stories of people's interactions with Scarlet Lady were now circulating.
"Adrien, you can't seriously be okay with this! I'm your friend and we would be much better than stupid Dupain-Cheng!" Chloe told Adrien but he shook his head.
"'Were' your friend Chloe, 'were' as in we used to be and haven't really been friends for a long time but I am just making it official!" Adrien thundered and Chloe was open mouthed and this surprised the class. "Sorry Chloe, I have tried to give you some time to better yourself but you keep pulling these stunts while being a cruel bully to our classmates and treating me like a possession of yours. Calling my girlfriend and my new bro losers was me losing all patience and I can't pretend anymore. I am sorry Chloe but I can't be friends with you anymore, you are different from the friend that I used to have." Adrien said and Chloe furiously charged at Marinette.
Adrien caught her hand and glared at her hard before letting go, Chloe began ranting and shouting on the spot while kicking the desk and Ms Bustier had to tell her off and send her to the principal's office.
"Sorry about that Adrien..." Marinette said since as much bad blood as there was between her and Chloe, the bully did used to be a friend to Adrien.
"You have nothing to be sorry about, just keep being the girl that I love." Adrien told her and she smiled back.
Later in the week, after school they were at a park bench as Marinette was at Luka's lap and Adrien was in Marinette's as the three relaxed together. However they heard screaming and saw an Akuma attacking people in the streets.
Marinette jumped out of Luka's lap and helped Adrien up who was in a similar panic as her's. "Sorry guys, I hate to break up a perfect moment but... I have to get a cake to Nadja and I don't want to be earlier than I was last time since it didn't go so well..." Marinette said thinking on the spot.
"Don't worry... I just remembered an event that my dad would want me to be at..." Adrien said as they both ran off in separate directions.
Luka smiled as she dusted himself off and went home chuckling at them, after a few days of this did they really think that he would not pierce it together? No matter, this means that he could talk to Adrien about Marigold and bond over them crushing on her.