Instrument of Evil

Instrument of Evil is the story of a basically normal 21 year old woman who has an unusual hobby. She's realized that she's a fledgling serial killer, and sets off on a life of crime, starting with easy targets, then moving on to harder ones. In the midst of this she meets a guy, and she likes him, more than any guy she has ever liked. She knows she should break the relationship off before he gets hurt (or reports her to the police), but she just can't do it. She realizes that she's in love for the first time of her life. The guy has a few secrets of his own, however, but she doesn't know that yet. It's a girl, a boy, and some murders. How do you keep love alive when you're an active serial killer?