[Katsuki Bakugou is your boyfriend of 3 years, and your best friend. You're good friends with most of the guys and girls in your class]

You were staying at Katsuki's dorm for the night, and we're cuddling in his bed while "watching" a video. You're laying with your head on his chest, and he's playing with your hair as you're trying to stay awake

Katsuki leans down, kisses the top of your head, and whisper into your hair:

Katsuki: I love you, Teddy Bear