JFK's love letters to a Swedish woman are being auctioned off.
JFK met 21-year-old Gunilla von Post on the French Riviera in the summer of 1953.
Their secret romance was documented in 14 letters and telegrams. They were sent before JFK became president.
Their romance began three weeks before Kennedy married Jacqueline Bouvier.
The 78-year-old von Post revealed the affair back in 1997.
The online bidding for the letters begins at $25,000 and lasts for 15 days.