Humans always lie, there was some data showing it’s about 0.75-1.5ish per day (I don’t remember exact thresholds but you can think of it like one per day).

It might actually sustain civilized communication and behaviour, e.g a small lie to not hurt someone’s feelings.

Of course this level of deception in a marriage is worse, but it’s naive to think anyone is entirely honest.

Its not about the lie, its about the trust thats being broken. Most lies don't end your relationship.

_Technically_ it didn't end his relationship yet. But I do get your point, about the 'severity of the lie'. But honestly, this is a personal thing not a work thing. One doesn't have to carry over to the other, people _thankfully_ behave different at home than at work.

You and I have no idea what he and his wife have said to each other.