No need to ask. I can tell you outright that I never did.
While would you give that person flack for their lie of omission, when the result of telling the truth would be of the same outcome if not even worse? Does this automatically dismiss all the truthful acts this person did during the time of your relationship? Does this seriously make you believe that this person is completely untrustful?
The ideology of yours goes against what many marriage counselors and happily married couples say and rather lean towards blogs about vocal angry roasties crying when their husband has cheated on them after a 4 year long dryspell of her cucking him with Tyrone, or incels being very angry about their highschool sweetheart dumping them.
I'm not talking about serial cheaters. Fuck them. These are the people that put no value into their relationship or are mentally ill. I'm talking about honest people doing a mistake. Some of who are too dreaded to own up for it.
Your lack of empathy and the notion of (I repeat, one time!) cheaters being animals that need to be shot and exiled, as well as how you would treat that person yourself, shows that you are not ready or mature enough to discuss the subjects of relationships just yet.
Pretty much goes hand in hand with you thinking I'm retarded for your disagreeing with your backwards conservative opinion.