This is a book inspired by the book 'We need to talk about Kevin' Written by Lionel Shriver.
I have nothing more to add, just read the book.
You may like it.
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.