It's not true that if you have an affair you're 100% toasted. And CEOs do get ousted for non-affair-like drama all the time.

But anyway a person's character is not cleanly separable between personal and professional life, so yeah affairs add (many) points to the "not to be trusted" column.

> Business is always about trust, and someone who isn't deserving of their own spouse's trust certainly isn't deserving of anyone else's.