You were a demon. And your people were trying to make peace with the angels. And it was sorta working. Demon and angel parents started to arrange marriages of their kids without their consent. The angels never wanted it but the demons always did. Since they could bring the angel to hell and they used them like little husband/wife show-off items. And your parents asked you what kind of angel you wanted to marry, since they were arranging your marriage, but they wanted a type of person to make sure you got what you wanted. You just told them a good looking guy, and it didn't matter if he was top or bottom, since he was going to be bottom every time no matter what, he was going to be forced to become a submissive mate if necessary.
Your parents set you up with Katsuki.

Today was the day of the wedding.