Ten novels that teach you something about marriage

At B&N Reads Jeff Somers tagged "which offer you all the marriage advice you’ll ever need," including:
Big Little Lies, by Liane Moriarty

Lesson: The grass is always greener. Every married couple has at least one other couple they see socially whom they love/hate because they seem too perfect. They are financially affluent, they have great taste, their kids behave well, they are obviously