Disgraced political reporter Olivia Nuzzi — who is set to release a tell-all book on her “sexting” affair with Robert F. Kennedy Jr. — was accused by her ex-fiancé Ryan Lizza Monday of sleeping with former South Carolina Gov. Mark Sanford in 2020 while the pair of journalists were dating.

Lizza claimed he uncovered a secret love letter on hotel stationery that proved his then-live-in girlfriend had been cheating on him with Sanford — infamous for his own extramarital affair — during his 2020 presidential campaign in a Monday newsletter post titled “Part 1: How I Found Out”.

The ex-Politico writer who ended his engagement to Nuzzi after it was revealed she was involved in a “sexting” relationship with Kennedy wrote that the discovery came when his sweetheart returned from what she to

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