The point of view in this novel is really interesting; John and Lorraine narrate alternate chapters and we get both of their perspectives. We also see each of the main characters described through the other's eyes: Lorraine, for instance, can be quite critical of John. If only one of them were narrating, we would have a much different story. The first-person point of view can also be limiting: would an omniscient narrator give us a different impression of John's father, for instance?