He's cuddly to you

You're his boyfriend.

You two were dating for a long time now and finally he started to show you his vulnerability. He started with more kissing, touching. And wasn't afraid for you to see his emotions. He trusted you.

You two were in his dorm. He was on phone but.. he started to cuddle into you. He even shifted into you. Being on your laps, his arms around your waist and then you heard a soft mumble..

"Don't move that much, idiot.." Katsuki mumbled, however, you were pretty sure he was enjoying it.