My rating does not reflect my opinion about the topic, but rather how the book was written. For a book about sex and relationships, this was kind of boring. The information was not skillfully modulated so as to not inundate the normal reader. The voice of the author also sounds like kind of a smarty pants, without being able to maintain a sense of authority. After all, you're laying out all the previous scientific(?) research on these topics, so the reader can make his or her own decision on whether they hold or not. You should have reined in the wisecracks now and then.
Bottom line I'm getting: Girls, if your husband strays, don't be so mad. It's natural.