She was just 18 at the time and a virgin - and he was her first love.
Reagan was 39 and was actually playing her father in the 1950 drama ‘Louisa’, which is how they got to know each other.
In 'Learning to Live Out Loud' she writes that to begin with Reagan was the perfect gentleman and asked her mother for permission to take her out on a date.
But instead of doing so he took her to his home where he made hamburgers for them both.
Things went downhill from there and when they moved into the bedroom where Reagan turned into a 'show-off' who had sex 'without grace'.
Laurie, 79, writes: 'He made sure I was aware of the length of time he had been "ardent". It was 40 minutes.'
Laurie adds that when she complained she was not satisfied, she got rather short shrift indeed.
Reagan told her: 'There’s something wrong with you. You should have had many orgasms by now - after all this time. You’ve got to see a doctor.'
On top of that, the man who went on to become Leader of the Free World also disclosed the amount he had paid for the condom, in a crass attempt to prove his point.
Read more:
http://www.dailymail.co.uk/news/article-2061105/Piper-L...