Bill - In my round two I have not said a word about it to anyone. Not a soul. This has allowed me to really work on things with only my own real thoughts and perspective. Sure, it would be nice to have someone for support, but sometimes it just makes things more confusing. And then if you do manage to save your marriage, your friends and family are unlikely to ever be the same way with your wife again -and that will create problems that you just don't need.
Since I am only in day 10 of round two of dbing, it's mcuh easier to not have help. And I knew pretty much from the beginning that tomorrow would be the day we have the R talk, so that also make it easier in some ways.