The National Geographic has, however, changed this public opinion.
In the audio clips, Diana tells the truth behind her tears.
'You may recall seeing a picture of me sobbing in a red coat when he went off on his aeroplane. That had nothing to do with him going.
'The most awful thing had happened before he went,' the princess continued. 'I was in his study talking to him about his trip. The telephone rang, it was Camilla.
Continuing, Diana says, 'Just before he was going for five weeks. So I thought, ‘Shall I be nice or shall I just sit here?’ So I thought I’d be nice, so I left them to it.'
'And it just broke my heart, that.'
Related: Prince Charles didn't marry Camilla before Princess Diana for this reason
Related: Exposed: Princess Anne’s affair with Camilla’s husband
