I didn't compare the young woman/girl in that case to op in terms of responsibility /culpability, I have explained upwards of 3 times why I mentioned the case but you are completely and utterly fixated on it and I don't know if you're being purposefully obtuse or ...
In any case, back on the main topic;
Cheating men gave a script for the ow/mistress and a script for the wife when caught.
They lie and imply lots of things to "invalidate" they're marriage to the OW. It's on that basis that most OW get involved and invested.
They perform a type of fraud towards the OW and while we might shake our heads at how naive or vulnerable fraud victims are; we (rightly) don't blame them for being victims of fraud.
Both OW and wife are usually victims of the cheater.
As for inflicting the most hurt/damage when telling... I've seen that idea in another thread where some posters were suggesting an OW should not have told his wife anything .... I'd love to know exactly how you tell someone (and prove) they're husband has been pursuing, "dating ", snagging and future faking with you in a gentle, low damage way.
Catch a grip.
It's there in black and white when any OW forwards the messages and images etc.
And op.was fkg asked to! With no retraction when his wife changed her mind and decided to do an ostrich impression. Op was supposed to be psychic. It was her perogative to inform.hos wife anyway.
I think posters who say things like this are likely to have been victims of a cheating husband and still haven't managed to grasp that their husband was fully responsible for their shock, pain etc. And that OW naturally get bitter and angry when they're finally discarded; and anything from them is also their husband doing.