The best novel about marriage that I've ever read.
This book centers on courtship and marriage - with most of it being about the marriage itself. It is typical Lewis prose, and is set in a midwest town (as usual for Lewis). The book drags a bit in the middle, but the last 80 or so pages are outstanding, so it is well worth getting through the set-up to get to the ending.
Between some of the chapters, there are occasionally some short passages about fictional marriages, and some of these passages are outstanding and quite touching.
But the biggest strength of the book is Lewis' examination of marriage/love/heartache/romantic trust. It is done artfully and unforgettably, and I would think that it will be hard to top this book for tackling those issues well.