That person was tycoon Aristotle Onassis (hence the nickname “Jackie O”).
By 1968, Jackie and Aristotle were being wed in a ceremony in Greece.
Romantic, right?

In all, it seems like Jackie went through quite the trauma with the devastating death of her husband.
But we can say that sister Lee Radziwill seems to have gotten the bad end of the deal.
What happened to the happy couple?

The marriage of Jackie Kennedy Onassis and Aristotle Onassis didn’t last forever.
To be fair, Radziwill was married at the time she took up with Aristotle.
(viaVanity Fair).

He was her longtime companion that shared her home for 12 years right up until she died in 1994.
Tempelsman gave a eulogy at her funeral, reading the poem “Ithaka” about life’s journey.
It’s touching until you consider Tempelsman was and had been still technically married to his wife since 1949.