I love "The Way of the Superior Man" by David Deidra. Most men, (and women) appreciate his approach. Not really a 'couples' book, but my husband and I both enjoyed it, very, very much. (Not a christian book).
I've read a few of the books mentioned, but I have to say, those don't really appeal to men as much as they appeal to women, and keeping his interest is vital.
If he's being distant, I suggest not cramming the book down his throat... (I've tried this approach many times... never works lol).
Leave it where he can see it, and I'm sure he'll be intrigued by the title. The book can also really help you understand him, and his needs, as a man.