Werewolves are destined to have a partner. The moon goddess has made it this way because she believes that no wolf is whole unless they have their partner; their one true love. However there are certain circumstances which can mean that a wolf may lose his partner. A wolf that doesn't follow the laws of the moon goddess, or a wolf that mistreats his gift from her can lose his other half permanently. To make sure that each wolf has found his true mate, the pair have their own birthmarks that, when alone are two halves, but together make a complete tattoo.