The girl and the cat

A story of a girl and a boy, but the boy has a secret that nobody knows, until he gets enough confidence to show/tell one person. Max is a male human that can transform into a cat at will and has random changes of mood sometimes (depends on how author wants to put it) Skylar is a female human that does well in school and hasn't had anything magical or dramatic happen to her, until a new student came to her school.