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Jackie's men: Sitting with John F Kennedy just before they married in 1953
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Young love: JFK and Jackie pictured in the early days of their courtship. At this point, Jackie was already writing to Leonard, likening her future husband's womanizing ways to those of her father
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Newlyweds: The couple married in 1953. A year later, Jackie writes in a letter to Leonard: 'I love being married much more than I did even in the beginning'
Shaken faith: Jackie, pictured with her young children at JFK's funeral in November 1963, shares her heartbreak with Leonard, admitting that she had become 'bitter against God'