Girlfriend and I have read this together. We found this book (and the 5 Love Languages) to be revelatory in how much the material resonated with each of us. We understood so much clearer why our past relationships failed. More importantly, it has allowed us to understand points of frustration we've noticed early in our relationship and how to deal with them in a respectful manner that ultimately makes us stronger as a couple. Talk about a conversation starter - this book has paved the way for more of the Quality Time that my girlfriend so desires. And seeing her fulfilled in this way has made every other aspect about our relationship better.
I highly recommend this book to those who are serious about making a marital commitment. Cannot express enough the need to make the time to educate and prepare yourself for marriage BEFORE getting married. IMO, there should be a law in every state requiring premarital counseling prior to issuance of a marriage license. Read this book and you'll understand exactly why I feel that strongly about it.