My rating is 3, but feel 3.5 is more appropriate, but not a 4. There is a lot to like about this book; great characters, a bit of "whodunnit" and flashbacks to the first world war. The immense love felt by the couples is warm, believable and well conveyed. I was really routing for them. 
 However there were places where the story, whilst informative, just too long to get to the point. In short, it dragged, especially in the first half of the book. I have seen reviews where it was thought that the ending was a cop out, but I liked it, refreshing even. My overall impression is that this is a good book, but not a great book. I would probably only recommend it to those who enjoy "chick-lit" though.