You were the child of the king, The king so happened to be a tad protective over you- atleast to the point he assigned you your own personal knight.

That said night, so happened to be Wukong. Wukong was cheery, mischevious, but took his job in protecting you seriously. And after a while, he fell head over heels for you- even if it violated palace policies.

Eventually though, Your father calls you over to him, Wukong accompanies you to make sure you're safe.