Just pretend that Nino and Adrien have known each other since they were kids.
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Marinette POV:
"Hold still!" I say to Adrien as a sew up a hole in his green shirk I made for him only a week before for a school project. School started two weeks ago and they are already giving us projects. But at least I have a loving husband as of three weeks ago. We got married, had a beautiful reception that Chloe and Alya planed, and then had out honeymoon the week before college started. So the past weeks have been pretty busy with Adrien's modeling and my school we don't have much time together. We also have had a few akumas during the night taking some of out much needed sleep.
"Even though we are married and have seen way more of each other it is just awkward. With me standing in front of you in just my boxers and loose shirt." Adrien says looking down at me as I break the string with my teeth.
"Oh well! Anyways you just took up some much needed time with all your moving because I still need to go meet Alya. I do have to make her wedding dress." I sigh as I put up the needle and string I was using.
"Sorry bugaboo, I just was a little scared you might stab me with the needle." Adrien says scratching the back of his neck nervously.
"How dare you doubt my skills!" I say putting my hand over my heart in fake hurt. "I would never do that by accident."
"Thank...wait what!?!" Adrien was saying until he realized what I said. He quickly looked at me seeing me walk toward him with a needle in my hand. He began to run around Adrien's room. Until he trips and I fall on top of him. Our faces were right above each other. I lean down and slowly but passionately kisses Adrien's lips.
We have been living in Adrien's room since they got married, since it was so big. But we are planning on getting a house of our own very soon.
I pull away from the kiss standing up and reaching my hand toward Adrien to help him up. He gladly grabs my hand standing up. I gives Adrien one more quick kiss on the lips, grab my sewing material, and says, "My Kitty, I'll be back in a few hours." With that I rushed out of his room and down to the waiting limo.
When I arrived at Alya's house she was pacing the floor like I did on my wedding day. "Calm down, Alya!" I say trying to mimic her voice when she said it to me a few hours before I got married.
"I can't, Mari. Where have you been you are thirty minutes late!" Alya says exasperated.
"I was fixing a shirt I made last week but Adrien wouldn't stop moving so it took longer than I thought it would." I say setting my stuff down next to the sewing machine that Alya had out ready for me. "Ok let's get started."
Even though Alya know I'm Ladybug she still wanted her wedding dress to be red with black dots. "Alya!" I yell as she stands up making a superhero pose with the tape measure around her waist pulling me out of my seat with her.

"You're even worse then Adrien." I sigh as I finally am able to get Alya to stop moving and stand still.
When I finally finished her dress she looked beautiful. Their wedding is two days away. I don't know how they planned it so fast but I am just happy they are happy.
__________Two Days_________
It's been two since I made Alya's wedding dress. Adrien and I are of course their maid of honor and best man. I am standing in the back with Alya who is surprisingly calm compared to how nervous I was.
She looked beautiful in the off the shoulder dress I made her. The top was all black while the bottom was red with black dots like a ladybug. She had on black strapped high heels, silver ladybug earrings, a silver and black rhinestone ladybug necklace, and a rose flower crown on her head.

Alya's bridesmaids Chloe, Mylene, and surprisingly Sabrina wore a different dress then I did. They were wearing a black sleeveless dress with lace at the top. They had red strapped heels, red rose earrings, and a red rose necklace with little colorful flowers around the rose.

I on the other hand as her pristine maid of honor had a red dress. Also sleeveless with lace at the top. I have on black, flower strapped heels, black circle earrings with little rhinestones at the top, and a red and black rhinestone ladybug necklace.

Alya walked up to the door where her father was waiting. The wedding march began and she headed in.
Nino POV:
I look over to see Adrien talking to my grooms men Nathaneal, Ivan, and Max. I can't believe that dude actually got married before I did. Then a memory from when we were little.
"Nino, I bet when I am older I will get married before you!" Adrien said to me. He was 5 years old while I was about to turn five in a few days.
"Oh yeah, what will she be like?" I say challenging him for more details so when it doesn't happen I can win the bet.
"She will be my princess. We will fall madly I love, get married, live in a big house, and have a bunch of kids."
Adrien said to me looking off into the distance probably trying to imagine her. "She will be beautiful, brave, loving, and a good parent to her children unlike my daddy since my mommy left. I hope that if she were to leave I wouldn't end up being cold and cruel like daddy."
"I promise you won't end up like him, dude. But I will hold you future wife to those standards you just set. But if you don't get married before me and she isn't like that you owe me $100." I say to Adrien to which his eyes light up in excitement.
"But what do I get when I when?" Adrien said while looking at me with soft eyes.
"The best wife and mother of you children any one could ask for. Also I'll give you my special hat." I say to which Adrien gasps.
"You mean the hat your father gave you?" Adrien asks shocked and I nod. "No, couldn't take that from you."
I smile at how kind Adrien is even thought he is only five and then say, "Ok then I will let you name my first child." To which Adrien giggles and nods his head.
"Adrien it's time to go! Don't want to be late for your photo shoots." Adrien's daddy yells from the front yard.
Adrien sighs and yells back, "Ok daddy!" He turns to me giving me a smile and waving good bye as he runs to his daddy.
I look at the door and realize the wedding march still hasn't started. I then begin to compare Marinette to his dream wife.
She will be his princess.
Check.
They will live in a big house.
Check.
Get married before me.
Check.
Have a lot of children.
Not yet.
Beautiful.
Check.
Brave.
Check.
Loving.
Check.
Won't leave him.
Check.
It turns out Marinette was his other half from the very beginning. I wonder on that day what girl he was imagining as his dream wife.
I am then pulled out of my thoughts as the wedding march begins. First incomes Chloe, the Mylene, and then Sabrina as her bridesmaids in black dresses. Then Marinette comes in as Alya's maid of honor in a lovely red dress.
But when Alya walked in arm in arm with her father my heart exploded. She looks absolutely beautiful in the dress that Mari had made for her only two days before. When she finally was in front of me I took her hand from her father.
As the ceremony began I didn't even listen to what he was saying. All I could do was stare at Alya in all her glory. I heard the question I have been waiting for and say, "I do." I stifle the diamond wedding ring next to the heart shaped engaged ring. I may have borrowed some money from Adrien to get this expensive set but it was so worth it to see her face.

When it came her turn to say "I do." She never even hesitated. The preacher hen said, "I now pronounce you man and wife, you may now kiss the bride." I quickly took Alya in my arms and gave her a passionate kiss. When we pulled away I finally heard everyone clapping and cheering.
I had finally been able to marry the girl if my dreams. I grab her hand and run out of the chapel out to the limo to take us to get ready for the reception.
"I love you." I whisper while my lips hover over hers.
"I love you, too." She says as she joins our lips in another passionate kiss.