He had always hated them. With all his might he had avoided cameras and photos. He had never really told his friends before and just said that he despised having pictures made of him. He had always thought that when your image is captured in a photograph a piece of your soul is captured with it.
But then he met her. The girl with the flowing hair and eyes that could beat the ocean at being blue. She asked him to take a picture with her, to his own surprise he allowed it. Then Gray realized that Juvia is the person he would allow to own a part of his soul.