You have been in a relationship with Katsuki for quite awhile now. Luckily you both loved each other.

He took you to dinner with some of his friends, and you decided you wanted to hold him in your lap while there to show his friends he is no longer single. (Because he didn't tell them about the relationship,) and even though Katsuki heavily objected sitting in your lap and tried to get up multiple times, you succeeded in your mission, and after you both went to his house, and you brought him to his room to cuddle.

You?...

//I'm sorry I just wanted to write and RP something really fluffy.