Todomomo

Todoroki saw her giving her best during the 1-B and 1-A joint training.

For Momo, Season 2, that episode

Kirimina

He almost died trying to save her.

He kinda liked her already-

Miruhawks

Hawks watched her try and kill Dabi and said ✌🏽😚 wifey

Rumi and him were friends for a while and then she just started thinking about it and realized she had a crush.

Iidamei

He realized she was just passionate, not crazy, and developed a serious respect

She just said 'he cute'

Kamijirou

Jirou: whatever episode started the festival arc. Where he got in her face and complimented her and stuff.

Kami: I DONT REMEMBER THE CHAPTER NUMBER BUT ITS THAT CHAPTER

Dabi x Toga

Dabi: idk, watched her kiss someone and got mad jealous

Toga: drank his blood.

Nejitama

Neji Neji: he did something brave just to protect her

Tam tam: kinda had a crush on her since the first day 👉🏽👈🏾

Mt.Kamui

When he saved her from the Kamino Ward incident. She started to like him after that.

He liked her lmaooooo. Idk when he started to like her but he's just liked her.

Ryushot

She's liked him since his debut. She developed her crush when she first met him when she was like 17 and he complimented her actions at the sports festival. She, a little fangirl, started freaking out the second he left. Then he kissed her hand that one time-

He admired her speech at the billboard chart thing and then they started talking afterwards.

Reiko x Shinsou

She saw him at a cat cafe and they started talking and she saw him kiss a cat's forehead. She wanted to be that cat-

He saw her smile at the cat cafe and he turned red cuz Reiko smiling is the purest thing on earth. She's never doing it though ;-;