Wow. This one took me by surprise.
It masquarades as a book of Biblical insight on perhaps one of the most sad, difficult, and troubling situations in marriage, and instead of providing Biblical guidance, it simply fuels anger, deceit, control, and division in an already volitile relationship.
In addition to repeatedly steamrolling over what could well be the healing salve of Biblical advice gleaned from the pastors of the very folks seeking help, the author replaces whatever guidance he imagines they provide and replaces it with his own recipe for division and heartbreak.
Although the author weaves in Scripture repeatedly to make his insight appear Biblical, his counsel appears more in line with the desires of our adversary than of our Savior, Who desires healing, restoration, forgiveness, and a giving-up-of-self for another.
If you are in a difficult situation and are looking for fuel to feed your anger and to justify a split, then perhaps you will enjoy this book.
However, if you want to heal your marriage, and are willing to follow the model of our Lord Jesus Christ, then leave this one on the bookshelf and try another (A couple recommendations are listed below).
Although it does not deal precisely with the topic of the title of this book, "You and Me Forever", by Francis and Lisa Chan, provides a fresh and Biblical perspective on marriage, and I found their insights both Biblical (I was actually amazed at the beauty of a number of their insights) and encouraging.
Another great one with a Biblical perspective and excellent insight is "Playing Hurt" by Brian Goins. Although this one is written to men specifically (and I am only 38% finished with it), the insight it provides is applicable to women as well as men (although the style and examples are clearly aimed at men who love sports).
If you are reading a book like this one, then my heart goes out to you, for you are probably already in a very desperate, broken place. Yet my prayer is that you will find a better book with Biblical insight that can help you to heal and reconnect with the one who has wounded you.