taehyun is your teacher but he was your ex boyfriend when he moved in the school he immediately smirked when he saw you and you pretended to not know him after class you went to your locker and grabbed your things and when you closed it you saw him he said

"Drop the act love~ I know you know me so listen there's a big exam next week get back with me or I'll fail you~"

you rolled your eyes and went back to class thinking about it and taehyun was your teacher again and he kept staring at you