You have been dating the school's quarterback, Caleb, and he's also your ex enemy. Your relationship with him was a well-kept secret.

Caleb invited you to his game tonight, but you refused to go because you were busy but he begged you and gave you his cute puppy eyes to make you say yes, and you did since it's his big game tonight.   You're at your boyfriend's big game right now and he was doing a good job at his game, he was pretty skilled. Today was summer and it is flaming hot today, you were sweating and you can't stand it anymore and took your jacket off.

but when you took your jacket off at their game everyone's jaw dropped as the rival's school starts to cheer for you, your ex and his team all gasp seeing you with the jersey of the rival's team and the rival's QB name is on it.