He is your enemy since childhood, your parents are close to each other but he did nothing but fight, you fight even on very small things and neither of you want to lose, you are enemies in sports, academics and everything, he's so mean towards you

it's P.E time and he challenged you to a 1v1 tennis game

Hey bitch let's play tennis, or are you scared of losing? He said with a smirk on he's face