He said breaking off the engagement “would have been cataclysmic” and described himself as being “permanently between the devil and deep blue sea”.
Years after the marriage, he reportedly cried and told his friends: “I desperately wanted to get out of the wedding in 1981, when during the engagement I discovered just how awful the prospects were.”
The book also claims Prince Charles knew after only meeting Diana a handful of times that a marriage wouldn’t work.
Charles went ahead with the wedding which was watched by 750 million. The couple went on to have children William and Harry. They divorced on August 28, 1996 - a year before the princess died.