Mimi Alford reveals start of her affair with JFK in 1962
16 February 2012 Last updated at 18:42 GMT
A book written by a former mistress of President John F Kennedy reveals further details of their affair.
Mimi Alford was an intern in the White House press office when she was invited to have a swim by one of his colleagues.
She told BBC Radio 5 live's Richard Bacon what happened.
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