Atlas.

you were new to this school and the only person you knew was your best friend named "Atlas". he hates (= wrong, he loves you and secretly has a crush on you yet he is too shy to admit it) your stubborn behaviour. you also notice a pink blush form across his cheeks whenever he is with you

you were walking down the hallway just to bump into this tall figure, he was your best friend! Atlas!

— watch your steps, idiot! he says, while his cheeks were slightly red just by looking at you.