His private life is irrelevant. He’s an adult and can do what he wants. It only matters if he spilled secrets to the spy
https://foxandlion.pub/analysis/traitors-among-us-who-is-vul...
> A balanced, patient, and motivated Machiavellian can wait while they cultivate what they need. They may take 10 years to act; they may well wait 20 years. When the strike comes, it will come out of the blue – and their tracks will already be covered.
Secondly if he's willing to lie to his wife and family he's obviously willing to lie to anyone for much less. It tells you something about the character of a person, how can anyone trust a cheater?
But it’s usually don’t ask don’t tell, not explicit lying.
To give a specific example, I’m currently traveling in Vietnam, and an entire floor of my allegedly “5-star” hotel (the most expensive in the city) is reserved for prostitution. This is a smaller city with almost no foreign tourists. The rest of the hotel operates as normal, with a fancy breakfast served everyday 6-9am.