This doesn't really seem to be about Buddhism, but it is fabulous. My fiance and I read this book to each other almost every day. A few pages at a time, a small chapter: as we turn each page and read each word, this book speaks to us, unfolding the mysteries of being in a relationship. The book speaks often to the couple of getting into the "us place:" my advice is that you begin by reading the book together, and my belief is that, with this book, you will get there.
(To Charlotte: Thanks!)
Although, I do not know a lot about Buddhism (historic details as some of the other reviewers do), I can say I found the book an excellent, inviting and uplifting read. It impacted my relationship in a profound way. I think partly because it was not "clinical" nor written in an analytical style. The flow and read of the book was so wonderful, it brought down my defense mechanisms and made me consider what was most important. Each chapter deserves real think time -- and you may wish to read it together as a couple. Maybe a chapter each night before you go to bed.
It is a book of great enlightenment. It's what you do with it that counts. Several chapters struck a chord so deep, it moved me into a whole new realm. I can not give this book enough stars. I recommend it to all who are in a relationship and are striving to stay together over the long haul. You can spend a couple of bucks now, or a whole bunch later on therapy, post divorce.