I am looking for a story. The main character is a boy who is asked by his ex-girlfriends mother to perform a service. The Mother went to a witch go get a love potion that would make him and her daughter be in love the cost of the potion was ? years service to the witch. The ex girlfriend decided not try to get the boy back as a boyfriend and the Mother still had to pay the witch the agreeded price. The mother finds she is sick and dying and that her daughter would have to pay the price. Since the boy caused the daughters depression the mother askes him to work her service time. He agrees.