Aristotle Onassis and Maria Callas 'couldn't live without the other one,' his longtime personal secretary Kiki Feroudi ...

Aristotle Onassis and Maria Callas "couldn't live without the other one,” Kiki Feroudi Moutsatsos recalls Hulton-Deutsch Collection/CORBIS/Corbis via Getty Aristotle Onassis and Maria Callas When ...

Inside the tragic love triangle between Maria Callas, Aristotle Onassis, and Jackie Kennedy that spoiled three lives ...

“They couldn’t live without the other one,” Kiki Feroudi Moutsatsos, Onassis’ longtime personal secretary, tells PEOPLE. Once their affair began, she says, they "never stopped seeing each ...

New details the most mysterious love triangles of the 20th century, that of Aristotle Onassis Maria Callas and Jackie Kennedy ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas ...

Aristotle Onassis' longtime personal secretary Kiki Feroudi Moutsatsos tells PEOPLE about his affair with Maria Callas Central Press/Getty; Ron Galella/Ron Galella Collection via Getty; Len ...

There weren’t many people closer to Aristotle Onassis than Kiki Feroudi Moutsatsos, his personal secretary and loyal gatekeeper. It was Moutsatsos who arranged for many of the secret ...