Similar to Before I Fall* this story about three girls who have 24 hours to live. To survive, they have to fix their mistakes.
*I thought of this before I knew about that book, and it will still be different
Elliot Jensen and Elliot Fintry have a lot in common. They share the same name, the same house, the same school, oh and they hate each other but, as they will quickly learn, there is a fine line between love and hate.