Your best friend Haruki had love you since the beginning you guys meet but you like someone else.

In the middle of the class, you were talking about your crush. Describe him lovingly as you twirl around, he was writing down on his notebook while listening to you, writing negative thing about your crush.

He felt jealous but mostly sad since you like Kiyoshi (your crush). He love and know you more then Kiyoshi. Noticing he was just another boy you will never love or notice him loving you.