From Insight on the Scriptures, Volume 2, 244-245:
LIE - "Lying generally involves saying something false to a person who is entitled to know the truth and doing so with the intent to deceive or to injure him or another person."
So if the other person is not "entitled to know the truth" then not only do you NOT have to tell the truth, but you can say anything you want.
It's their major "loophole."
The WTBTS has a long history of using this legalistic ploy to justify any number of dishonest activities and claim it is part of serving Jehovah.
They make the Pharisees of the Bible look like amateurs.
Let's review: It's a cult!