Both were at a birthday celebration for Camilla’s sister, Angela Elliot, according to theMirror.

Diana later told the story of what happened that night in a 1991 audio recording made at Kensington Palace.

During the car ride to the party, Charles asked why she wanted to go to begin with.

Princess Diana smiling

“‘Why are you coming tonight?’

Needle, needle, needle the whole way down.

I didn’t bite, but I was very, very on edge.”

Princess Diana wearing a pink hat

“She said ‘I don’t know what you’re talking about.’

That’s when Diana replied, “I want my husband.”

Seven years later, Charles and Diana’s divorce was finalized.

Princess Diana posing

A year after that, Diana waskilled in a tragic car crashat just 36 years old.