Elias

This is Elias. Your fathers are friends. (This is a BL btw) so you came with your dad while his dad is trying to find him a king. You catch his eye as he looks for suitable women. You're a rebellious prince who breaks the rules yet never gets caught. He's always been the "golden" child but has always caused problems, just no one has caught him or suspected him. You've never properly met but you've seen each other many times.