It was 42 years ago to the day that the then Prince Charles announced his engagement to Lady Diana Spencer - and the world thought they were watching the beginning of a fairytale love story.
The couple posed for a series of photographs with Diana showing off her grand engagement ring - and they also gave an interview where Charles made a puzzling remark.
When asked if the pair were in love, Diana replied: "Of course", with her husband-to-be adding: "Whatever in love means."
