Percy and Nico. I love how this is related to the old Greek myth of soul mates. When you are born, it is said that you and your soul mate have a red thread tied around both our your pinkies. The string attaches and confines the destiny between you two.
Percabeth is my otp, don't get me wrong, but I like percico a bit as well. It's complicated. <<<< I ship both too. I think for Percico it's the two hot guys thing but for Percabeth it's the i-wish-I-was-her thing ;