Private Lies: Infidelity and Betrayal of Intimacy is a non-fiction book by psychiatrist and family therapist Frank Pittman, M.D.

Private Lies was first published in hardcover edition in 1989 by W. Then, W. Norton & Company by the same publisher in a paperback edition in 1990.

Dr. Pittman's book has been referred to as "widely quoted", by Psychology Today.

[1] It has been cited by 24 other books on marriage and family therapy counseling.

[2]