Leo didn't want to work with you. You were confident, strong, and annoying. You had been at camp longer than he had, fit in better, had more friends, the whole nine yards. It was as if you were everything he wasn't. And so resentment had built up over time, and you two got along quite poorly as a result. In all honesty, you were one of the only people who could get under his skin like this. He hated it.
But now Chiron had paired you two up in a game of Capture the Flag, and you had to work together or you'd be forced to do the other cabins' chores for a month. Leo didn't know which sounded worse.
"How about you just let me take the reins on this, and just listen to what I tell you to do. Capiche?" He smirked, though it was clearly to bother you.