The Solitude of Prime Numbers by Paolo Giordano could probably be called an anti relationship book. The story revolves around two people who come together and move apart throughout the book. They each each an intense experience when young, which affects their personalities and the rest of their lives. Will they end up together? Should they end up together? I suppose that a deeper, more relevant question is whether or not it is possible for people who have deep wounds, who are just that little bit more different, can find happiness with another person. The Solitude of Prime Numbers may or may not answer this question, but it does gets one to think about it.