Ok. So what was the goal of the confrontation? That she would stop? So you confront she denys it and tells you how you were a terrible husband. That is classic manipulation.
I'm not beating you up I am just trying to understand the goal. You act as this was a victory because you claim it's a 180?
It's great that you were calm and level headed but unless you are ok sharing your w with another man you just weakened your position.