Come on, sir! Play fair!
If you start a thread with a question, you should give us something to read. Either a story of your own, or particular reasons for asking.
One of my fellows had to leave. He often had to work late, with just a woman and himself alone in the office. His jealous wife made it impossible for him to stay. (By the time we understood the problem, the damage was already done.)
The funny thing was that his wife was 30-ish and very pretty. The woman he was staying late with, lovely though her personality was, was in her 60's and rather fat. Jealousy really is irrational!