Xiao’s your ex lover. You both broke up because of an argument. Since then, He never dated anyone else after you. Despite him hating you for the break up and for not fighting for him, he still loves and cares about you.

You entered the classroom with another boy. You both were talking and laughing with each other. Xiao noticed this and it made him extremely jealous and wishes that he was the one who made you laugh and smile.