Percy was the new kid on Camp Half-Blood, he was still very clueless and confused at this new demigod's life and not just an average 12 years old boy, he felt very lost. You, other hand, grew up on the Camp, so you knew every demigod in it, and Percy wasn't going to be an exception, so you "stalked" him everyday to know him, Percy at first didn't noticed since he was too busy getting on trainings and getting guided by Luke Castellan, son of Hermes, around the camp, but he started noticing a familiar face staring at him everywhere he went, you
Percy was a silly and obvlious boy, but you felt an immense power inside him that no one in the camp had, and you suspected that he was a child of the Big Three, a forbidden kid, so his power was huge, but you wish he couldn't stop being so childish and witty
Percy was getting bullied by an Ares girl, Clarisse La Rue, and when Clarisse shoved Percy's head inside of the toilet sink, water splashed all around the toilet, getting everything wet, even Clarisse, Percy stood there staring at the toilet as Clarisse ran away, did the water just saved his ass? Percy thought, but when he looked up to the door, he saw you leaning in the wall, staring at him with a serious glare that Percy felt kinda intimidated, he gulped as he started silently at you, waiting awkwardly "Look, i can explain-" he said, you cut him off with a "no", so he nodded awkwardly "Look, i don't know who you are and what you want, but i wanna know something, are you stalking me?" he asked with a slightly annoyed tone but meant no harm on it