If you were dating.

What they would do if you were dating them.

Todoroki: He will use his quirk to make small snowflakes at the corners of your paper during class, and once you turn to face him he will give you the sweetest smile.

Bakugo: He will pack you a lunch that he cooked himself, and sometimes he'll leave a note, it says stuff like. "You're cute, I guess."

Kirishima: Once class is over, You never have time to reach for your bag since Kirishima has already grabbed it for you.

Izuku: When Aizawa isn't looking, Izuku will hold up a note to you that says something he likes about you, The note changes every single day. And he secretly adds notes to his book about your quirk. (And he has his own notebook of facts about you)

Denki: Whenever you guys are holding hands, He will send the tiniest shock through your palm that ALWAYS makes you laugh. And every time you two make eye contact, He will wink at you.

Sero: In class, Sero will always try and get your attention by throwing tiny paper balls, And when you finally look at him, He'll mouth that he's bored and it never fails to make you laugh.

Shinsou: Shinsou will always be waiting outside of class for you with your favorite drink, He loves to play with your hair and tries to braid it.

(NOT MY IDEAS)