On September 16, 2000, 28-year-old Mary Donaldson went for dinner at Sydney restaurant and bar Slip Inn.
At the time, she was working for the real estate company Belle Property as a sales director and attended the venue with her roommate and a friend.
That same night, 32-year-old Prince Frederik attended the same bar with various royal friends, as they were visiting Australia for the 2000 Sydney Olympics.
They met up with Prince Felipe of Spain, who knew the sister of Mary's roommate. Prince Frederik introduced himself to Mary as "Fred".
"The first time we met, we shook hands," the now Princess told Jens Andersen, the author of Prince Frederik's authorised autobiography, Under The Bar. "I didn’t know he was the Prince of Denmark. Half an hour later, someone came up to me and said, 'Do you know who these people are?'"
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When Andrew Denton asked Mary about their first encounter in 2005, she said, "I gave Frederik my telephone number and he rang me the next day, so you could say something clicked. It wasn't the fireworks in the sky or anything like that but there was a sense of excitement."