I read this book in the year that my fiancee and I were engaged and preparing for marriage. He is Catholic and I am not, but this book was very useful to the both of us. We both read it and thought it offered a lot of insight and advice to a lasting marriage and ways to better understand your spouse (with a little humor mixed in). I would recommend this book to anyone preparing for marriage or anyone who seeks to understand their spouse better! A very good read!
If you're looking for a very practical, solidly Catholic , down-to-earth guide to marriage and/or raising children (i.e. Parenting with Grace...), Gregory Popcak's books are for you. He has a solid foundation in Catholic theology and a real talent for writing. His books are easy to understand, highly useful and a delight to read. I especially recommend giving For Better...Forever and Parenting with Grace as a wedding gift to young couples. Such a gift is not only unique, but highly useful and practical. It's a gift that you know will keep on giving in the most important way...bringing Catholic couples and families closer to God's glory.