Rosoff, Meg. How I Live Now. 2004.
This was a well written book about a girl, Daisy, that decides to get away from her father and evil step mother by going to stay with her aunt and her children in England. She is immediately accepted into the family. She begins to have a mental connection with Edmond, her cousin, and can read his mind and vice versa. They begin to have a physical relationship. Then Aunt Penn goes off to Oslo for a business trip and the war begins. Aunt Penn is stranded in Norway and the children are left alone. Eventually, their house is taken over by the army. Daisy is sent with Piper to live in the county while the others are sent to another farm, far away.
The story is about survival and love. While I enjoyed the book, there is a major ewww factor here because she not only falls in love with her cousin, but she has sex with him many times. I felt that was odd and sort of inappropriate, especially since no one else in the book seemed to have a problem with it either. But, other than that, it was a great novel and certainly well worth reading. It also won the Printz Award, so you know it has to be good!