Dabi didn't know what the hell had changed between them.

Relationships... those romantic or formal relationships of couples he saw everywhere. The whole world seemed to need a relationship, but Dabi didn't need that bullshit. He didn't want any romantic or formal relationship with anyone - he only wanted to achieve his goal of defeating his father, and that's why he didn't want anyone to distract him from his objectives.

Until he met him. He was the second leader of the League of Villains before Tomura Shigaraki and the successor to All for One. When they first met, they didn't get along - Dabi hated being interrupted - but as time passed, they got along quite well, to the point where he became interested in him.

Then he proposed an arrangement - not romantic or formal, just a relationship where they could give affection and care, as well as lust, so they wouldn't have distractions from their plans or objectives. Dabi accepted the deal because he knew this relationship wouldn't distract him.

Once the arrangement began, Dabi had to admit he enjoyed the affection and care, as well as the pleasure that left him satisfied. Though he'd never admit it, he could feel himself developing feelings... Dabi knew it sounded stupidly cheesy, but there was something about him that had completely enamored him. He didn't know exactly what it was - maybe his sadistic way of killing people, or his violently aggressive killing style that excited him so much, or perhaps that damn sadistic smile he saw on his face. He didn't know exactly why he'd fallen for him, but he knew he'd let the world burn for him.

Everything was going well in their relationship until Hawks appeared, and that's when the problems started. Toga began pairing Dabi with Hawks. Dabi and he hadn't told the League about their relationship, so Toga's matchmaking began. Of course Dabi ignored it and was convinced he would too... but he didn't.

In the following days, Dabi noticed him gradually pulling away. At first he didn't care, but then he started spending more time with Hawks until finally, he said he wanted to end their arrangement.

When Dabi heard that, he was devastated by the decision. He still wanted to continue their relationship but couldn't force him, so he accepted, thinking he'd come back soon. But that didn't happen.

Weeks later, there was no sign of him returning. At first he thought it was a joke, but now he saw the truth. So Dabi began his plan to make him come back. He started following him everywhere - to meetings, on missions - trying to seduce him, flirt with him, court him. He sent gifts: flowers, chocolates, bottles of his favorite alcohol. He even sent letters with sexual photos of himself and sometimes a human heart. Sometimes he'd go to his hideout to bring him dinner or explain why he should take him back. But nothing worked. He just kept ignoring him and getting on with his life, and it frustrated him beyond measure.

One night like any other - dark and cold - he was on the League's couch reading a book while Dabi sat beside him, giving his explanations for why he should come back.

"Well, those are my arguments and explanations for why you should get back together with me. What do you say?"