I suggest that you read many threads where infidelity is an issue and see what happens when people do and don't follow the advice to bust the A. I think that when you are dealing with a WAW and you don't have the responsibility of shared children, a very strong response is a good idea. Taking the "nice guy" approach is not going to shock her into re-evaluating her choices. And the longer that you wait, the further things will progress in the A, whether that's physically or emotionally.
It sounds like you're doing a good job on 180s...keep that up.
Here's a book for you: His Needs, Her Needs: Building an Affair-Proof Marriage This outlines gender differences in women's and men's needs in marriage. A good place to start when you can't figure out why your spouse was so unhappy that s/he had an A, moved out, etc.
me: 42 | STBXH: 41 | T: 18 | M: 10 | separation: Jan 3, 2010 | they deserve better: S7 & D4 current thread: http://tinyurl.com/3y8sxcp .: first breathe, then heal, then start LIVING :.