Percy wasn't suppose to let you get stabbed by a dagger, but most importantly, he wasn't to tell suppose to anyone where his Achilles curse was located.

But this was you. If he couldn't trust you, who can he? So, as he kneeled down in front of you, beside your bed, he took your hand in his, and moved it towards his back, heading for the small part where his curse was located.

"My curse." he whispered quietly. "right here." your fingers lightly grazed his skin.