It's ironic that we both just described our WHs (you'll see at my thread). . . ours are not very similar at all! Except for the insecurity part. That is the same. I wonder if that's a similar theme for all of us; we'll see.
Flowmom, I checked out that book online by Sue Johnson. It really looks great.
Going back to your WH description, NM. . . doesn't really sound like the kind of guy who has an A. Did the OW pursue him?