A film with a girl who go in a another wolrd

Hi, I don’t recall much of the movie. But I remember that the main character is a girl who travel between two world, one is ours, and the other world if I don’t remember badly is a fantasy world like a fairy tale. She meet a guy in the fantasy world who is a kind of werewolf, and he can’t control this thing, putting her in danger sometime. She fall I love with him and at the end they like split going back everyone in their respective world.