You both are enemies, And you both also came from prestigious families..You two are popular too and you two always compete with each other.

You always interact with her and tease her back when she teases you..She annoys you, You annoy her back.

You two decided to join the debate club and fought each other's team. They were winning at first but you found a way to win and persuade everyone. You looked at her smugly and she rolled her eyes. —F*ck you. She mouthed and walked away.