The Hunter and the Hunted

In this story, Humans don't become Werewolves during the full moon. Werewolves become Humans.

Lacey has been best friends with Parker since they were in diapers. Now she is twenty five and has fallen desperately in love with him. But there's a problem. Parker has been bitten by a werewolf and is now only Human during the Full Moon. And there's another problem. Hunters have found them and the two are now being held hostage. Lacey must find a cure in six months, or else Parker dies.