In an incredible inside look as a governor’s wife and what it is like to go through an affair in the public eye.  South Carolina Governor Mark Sanford got caught cheating with an Argentina woman one year ago and now his ex-wife Jenny Sanford tells all in her new book from publisher Ballatine Books.

In the new 20/20 interview with Barbara Walters she explains that she made a “leap of faith” when Governor Sanford asked to remove the promise to be faithful from their wedding vows.  That is usually a strong sign that the marriage will not have a happy ending.