. . . then it would be the first time that someone in an affair was honest!
All cheaters lie -- PERIOD.
I haven't really followed Dev's sitch that closely, and so I'm not aware of what good intel he has that would indicate that his wayward wife was being untruthful. In my case, I knew every day -- FOR A FACT -- and so when my wife would say something like "Oh we're just friends," or "It's NOT an affair!" I would put my hand up and say "PLEASE STOP IT. We both know you're lying to me right now, and it's incredibly disrespectful not only to me and to our marriage, but to our family."