It’s a text and tell.

Olivia Nuzzi — the former New York Magazine reporter who had a “digital affair” with Robert F. Kennedy Jr. while he was a presidential candidate — is coming out with a book that’s set to potentially incinerate his marriage to Cheryl Hines, a source tells Page Six.

Nuzzi’s planned book will include sexually charged text messages between the political journo and RFK Jr., a source tells Page Six. We hear that the book — titled “American Canto” in a nod to Dante’s “Inferno” — will delve into her headline-sparking relationship with the Kennedy scion, complete with spicy messages between her and the now Secretary of the US Department of Health and Human Services .

“Its hard to imagine RFK surviving this with his marriage and job intact,” said a source with knowledge

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