Here's what I see that seems to be a common thread in the LBH's threads. The WW is usually "caught" in an EA and then approached by the BH. If he has enough evidence, she usually will admit that she's in an EA (and often adds that it mostly just friends).
Then the WW & BH have a "warm" RT and the W is usually in a different mood/spirit/attitude than H has been seeing. The R talk ends on a nice note.
Here's the critical error the H makes. Based on how his W reacted to being confronted about OM, he (the H)thinks the A is over!! He responds to her her "niceness" and thinks they are moving forward in their M. He is WRONG! The WW sees this talk as the M moving toward a friendly D!
That is why we see so many on here get all excited when the WW confesses or admits her A and just b/c he is approaching in a Calm manner, she begins showing a more calm attitude and then even almost "sweet" toward him. May even hug or kiss him on the forehead, etc.
It kills me to see the LBH get all giddy over this confrontation talk and think it's over with OM and she's back o track to work on the M. In the cases I've read....that isn't the case at all.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!