Possession... (Dabidekubaku)

The wedding

Deku and bakugou were nervous freaks 

Dabi : "Chill babes, it's gonna be fine."

Bakugou : "w-what if there's pro heros?"

Deku : "How would they know about this place?"

Bakugou : "What if someone wants to mark me?"

Dabi : "I'll kill them with my bare hands."

Bakugou : "GOD IT CANT BE THAT SIMPLE! SOMETHING HAS TO GO WRONG."

Dabi grabbed bakugou and pulled him tight touching his dress

Dabi : "We're gonna be fine baby, stop worrying."

Bakugou : "yeah, yeah your right."

Deku : "Wedding starts soon, people are taking there seats"

Dabi : "okay... we should get ready to walk the isle."

When a Wolf/omega gets marked by an alpha, the alpha can never leave there mates side. It is completely normal for two animals in a wedding to walk next to each other down the isle. 

Deku : "Your right... let's head to the wedding area."

Dabi carried both deku and bakugou to the area without breaking a sweat

Deku : "Okay you can put us down -_-"

Dabi : "No~ I don't think I will be~"

Deku : whatever baka."

Dabi : "Do you want me to carry you down like this~"

Deku : "Of course not!"

Dabi : "Then shut up~"

Deku : Tch whatever."

Bakugou and deku got down and got prepared to walk down the isle

Overhaul : "Get ready to walk."

Bakugou : "K beak brain."

Overhaul : "YOU SHUT YOUR-"

Deku and Dabi intensely stared at overhaul

Overhaul : "n-never mind."

Bakugou : lol stupid beak bitch forgot about my soon to be husbands

The curtains lifted as the three walked down the isle

??? : "GAY FREAKS!"

Someone in the crowd called out as they through flowers at the back of bakugous head

Bakugou : "OI SHUT YOU MOUTH BITCH!"

Dabi tugged on bakugou

Dabi : just ignore it and act normal."

Bakugou : "Tch."

They arrived as the man started saying vows

Random guy : "do you Dabi take deku and bakugou go be your husbands?"

Dabi : "I do."

Random guy : "Do you deku take Dabi and bakugou to be your husbands?"

Deku : "I do."

Random guy : "And do you bakugou take deku and Dabi to be your husbands?"

Bakugou : "I-I- I d-don't!" 

The crowd gasp as deku and Dabi clenched bakugous hands tightly

Bakugou : "I-I mean I do!"

Dabi and deku stopped clenching his hand

Random guy : "you may kiss your husbands."

They kiss as the crowd cheers!

Dabi : "you two will be only mine FOREVER"