Letter From JFK To Mistress Up For Auction 

Calvin Harris Breaks His Silence on Split from Taylor Swift: \'What Remains Is a Huge Amount of Love and Respect\'

WATCH: Alysia Reiner on Body Positivity: \'I\'m Never Allowed to Ask "Do I Look Fat?"\'

Read the Cover Story: Johnny Depp & Amber Heard: Their Marriage Explodes

Charges Reduced Against New York Man Charged with Beating Wife\'s Alleged Rapist to Death

Ryan Gosling Thinks America Needs a Female President: \'America Needs a Woman\'s Touch\'

Johnny Depp & Amber Heard: Inside Their Toxic Marriage

\'I Don\'t Want to Die\': Boyfriend Allegedly Filmed Rape and Murder of 15-Year-Old Girl Found Under Sink

Parents of Owen Labrie\'s Victim Sue Prestigious New Hampshire Prep School for Allegedly Turning \'a Blind Eye\'

Tom Brady Shares Fake Rookie Card 21 Years After Being Drafted by Montreal Expos: \'I\'m So Happy I Stuck with Football!\'

Father of Murdered Teen Lunges Over Court Table, Attacks Convicted Sex Offender Who Allegedly Killed His Daughter

Ben Higgins "Seriously Considering a Run" for Seat in Colorado House of Representatives

Prince Philip Is Back to Work – 8 Days Before He Turns 95!

Juicy Handwritten Letter from JFK to Former Mistress Surfaces in New Online Auction

A handwritten love letter from President John F. Kennedy to his alleged mistress Mary Pinchot Meyer has surfaced in an online auction from Boston\'s RR Auction.

"Why don\'t you leave suburbia for once – come and see me – either here – or at the Cape next week or in Boston the 19th," Kennedy writes in the four-page letter. "I know it is unwise, irrational, and that you may hate it – on the other hand you may not – and I will love it."

"You say that it is good for me not to get what I want. After all of these years – you should give me a more loving answer than that. Why don\'t you just say yes," JFK continues.

The letter, said to be written a month before the president\'s 1963 assassination, was never sent. It\'s valued at $30,000.

"There\'s a playfulness to him in the letter that you don\'t see in JFK\'s other correspondence," RR auction spokesperson Bobby Livingston says of the item – believed to be kept by Kennedy\'s secretary Evelyn Lincoln. "He is always quite reserved in his correspondence."

Mary and her CIA agent husband Cord Meyer were friends of the Kennedys, living by John and wife Jackie in Washington, D.C. But Mary also knew John in high school.

She was found dead in Georgetown on October 1964 – a year after Kennedy\'s letter was written – from a bullet wound to the head. Her murder is still unresolved.

RELATED VIDEO: The Untold Story of JFK\'s Sister, Rosemary Kennedy, and the Disastrous Lobotomy Ordered by Her Father

The auction house also has a letter kept by Lincoln from another of JFK\'s rumored mistresses, beauty queen – and suspected Nazi spy – Inga Arvad.

writer first met Kennedy when he was 24, introducing him in a piece she wrote as "a boy with a future."

In her 1943 typed letter to Kennedy – set to go for an estimated $6,000 – Arvad asks Kennedy for an interview, saying, "After all you can\'t turn me down, can you? ... I will, if necessary fly to San Francisco – and all for business ..."

The Danish beauty then gets much more personal: "I don\'t quite know what to write to you Jack dear, because if I follow my heart – it will be a love letter, and if I don\'t, it will be stiff as an old poket [sic]. But you know me, I am on pins and needles, because I know you will be home soon. You do know – or don\'t you – that you are the person in this world I would rather see than anybody – or is that a little too much of an admission?"

Arvad also gets sentimental in the letter, saying she\'d recently seen a photo of him and a copy of his 1940 book

. "I am sunk when I look at it too long," she writes of the photo. "I promise to read it right off, and not stop till I get through – even if I die doing it," she adds of the book.

Arvad\'s affair with Kennedy is detailed in Barbara Leaming\'s new biography,

, about Kennedy\'s sister Kathleen, who died in a plane crash at 28.

The two met in 1941, when Arvad was 32 and Kennedy was 28. The two kept their affair secret, as she was married at the time. Kennedy\'s father Joe eventually "went into overdrive to end the affair," Leaming writes, after Arvad\'s former connections to Adolf Hitler put her under investigation by the FBI.

Online bidding for both letters – and a slew of other Kennedy memorabilia – begin June 16 and go through June 23. For more information, visit www.rrauction.com.

Please enable JavaScript to view the comments powered by Disqus.

VIDEO: New Jersey Mom Teams up with Tommy Hilfiger on Adaptive Clothing Line for \'Differently Abled Kids

WATCH: Slides Are the Sandal of the Season (and We Found the Comfiest Pair!)

Check out the new PEOPLE Games! Choose from our Puzzler, Style Mahjongg, Solitaire & More!

Queen Latifah, Plus, Kendall Jenner & Gigi Hadid, Eva Longoria & More!

Celeb Babies Make Their Digital Debut

Obsessed or Hot Mess: Check Out These Daring (and Sometimes Disastrous) Star Looks!

Before the Breakup: The Most Romantic Moments from Taylor Swift and Calvin Harris\' Epic Love Story

6 Simple — and Affordable — Ways to Brighten Up Your Home for Summer

Khloé Kardashian\'s Hyper-Organized Medicine Cabinet Will Blow Your Mind: \'I Have a Little Aisle at CVS\'

Elsa Pataky Shares Sweet Photo of Chris Hemsworth Napping with Their Kids: \'Nothing Better than Sleeping in Papa\'s Arms!\'

Why Maksim Chmerkovskiy and Kirstie Alley Aren\'t Speaking

Chris Pratt Flashed Amy Poehler?! Hear His Take – And See Her Reaction

Thank you for signing up! Your request may take up to one week to be processed.