An honest man says, “I have never cheated on my wife”
A devious man imputes motives to his questioner.
Nobody on the face of the planet has to jump to the tune of anyone who seeks their destruction.
He writes his own tune.
He owes nothing to you or any entity that rains down ugly, unproven accusations like a waterfall and yells, answer, answer, answer or else be assumed guilty of whatever is being rained down upon you today, and tomorrow it will be the same, and the next day the same...
For that is the method of the madness.
Only a very stupid person would not see through the planned and contrived absurdity of it all.
YOU are correct. All who have never cheated would immediately answer honestly: “I have always been faithful”.
This is not the “when did you stop beating your wife?” hypothetical.