While John Edwards‘ former loyalist Andrew Young met secretly with the Federal Grand Jury investigating the hush money conspiracy, THE ENQUIRER has learned new details about his behind closed doors testimony!

In his upcoming book, The ENQUIRER has learned Young will make a major damaging claim against his former boss, disgraced politico and two time Presidential Candidate loser John Edwards.

According to The New York Times, Young writes in his book proposal that Edwards said he "would be taken care of for life" in return for falsely claiming he was the father of Rielle Hunter‘s baby.

Young quotes Edwards as saying: "You know how much I love you. You know I’d walk off a cliff for you, and I know you’d walk off a cliff for me. I will never forget this. And I will always be there for you."

Before appearing in front of the grand jury, Young says he was questioned by The FBI.

The ENQUIRER first reported the FBI and the Internal Revenue Service were investigating Edwards for possible wrong-doing earlier this year.

Young says he’s written his book because he became disillusioned with Edwards’ behavior and recklessness, according to The New York Times.

Yesterday Andrew Young appeared before Federal Grand Jury Investigation convening at the Terry Sanford Federal Building in Raleigh, North Carolina. 

At 8:30 AM EDT Young entered the building accompanied by his lawyer David Geneson

Young spent the day meeting with Feds who are probing how Edwards spent campaign funds earmarked for his failed 2nd Presidential campaign. 

In a series of blockbuster investigative reports The ENQUIRER (SEE BELOW) revealed how hush money was funneled to Edwards mistress Rielle Hunter, the mother of their love child.

Young has yet to speak publicly since claiming to be the father of Edwards’ love child in 2007 and has repeatedly ignored queries from The ENQUIRER for comment.

Insiders believe he is "pulling a John Dean" – testifying against his former boss in exchange for immunity.

It’s calling covering your ass.