Light Series by Laura Whitcomb

In the class of the high school English teacher she has been haunting, Helen feels them: for the first time in 130 years, human eyes are looking at her. They belong to a boy, a boy who has not seemed remarkable until now. And Helen--terrified, but intrigued--is drawn to him. The fact that he is in a body and she is not presents this unlikely couple with their first challenge... moreIn the class of the high school English teacher she has been haunting, Helen feels them: for the first time in 130 years, human eyes are looking at her. They belong to a boy, a boy who has not seemed remarkable until now. And Helen--terrified, but intrigued--is drawn to him. The fact that he is in a body and she is not presents this unlikely couple with their first challenge. But as the lovers struggle to find a way to be together, they begin to discover the secrets of their former lives and of the young people they come to possess. less

Helen needed a body to be with her beloved. Jenny had to escape from hers before her spirit was broken. It was wicked, borrowing it, but love drives even the gentlest soul to desperate acts.And Helen, who has returned to help Jenny, finds herself trapped, haunting the girl she wished to save. Jenny and Billy's love story begins out-of-body and continues into the tumultuous realm of the living, where they are torn apart even as they slowly remember falling in love.