She's already cheated on the "faithful" path, and the "player" had no control/decision over it...
Player doesn't have to worry about destroying the marriage, Anna's doing it on her own...

Sending pics wearing your husband's favorite lingerie to another man aren't the actions of a faithful wife...

Anna knows this, so does the creator.
That's why David doesn't know about the pics, or that Anna stood in her underwear while Chris showered, etc.
Faithful David's "revenge" is finally finding out the truth about his wife's infidelity beforehand, and her having to earn his trust back...
Not going to hold my breath that'll happen on that path...