He would always watch over her like she was his treasure that he might lose at any moment. He always wanted to show himself to her but he knew if he did, she would get scared and run then he would lose his chance. One night he just decides to sleep outside instead of his cave when he sees a star shoot by in the night sky and he heard from the humans if you make a wish on that star your wish would come true. So, he wished with all of his might that he could be humantod be with the girl he had fallen in love with.