It's a Fae, Fae, Fae, Fae World

Plot:

Bo has been living on the run for years, trying to figure out why she kills people when she kisses them. After leaving someone she kills out in the open, she is contacted by a group called The Fae. She discovers who and what she is, and is told to join one of two tribes, either the Light or the Dark. She refuses and chooses the side of humanity instead.