They may be one of the most-watched couples in the world, but even the Duke and Duchess of Cambridge have fought their way through a considerable number of rocky spots.
After a meeting at the University of St Andrews in Scotland in 2001 and a friendly friendship for a year, the couple's friendship developed into a relationship.
But after about five years, William and Kate separated for a short time. A new book contained more details about why they quit and why this was not the only time they broke it off before they became engaged in 2010.
According to The express, the book, The Duchess of Cambridge: How Kate Middleton became a future queen, reveals that a young Prince William began to feel "claustrophobic" and went to Greece with his friend Guy Pelly to make room.
According to author Jessica Jayne, the boys' trip made Kate feel "miserable" after discovering that Mr. Pelly had organized a purely female crew for the sailing tour of Greece.
A source revealed in the book that she was not after a separation of the girls after the separation, but was staying with her family in Berkshire.
"She was pretty drunk with white wine and really left her guard in the lurch," they said. "She was wondering if she should write or call him.
"She said how sad she was and how much she missed William, but never mentioned it afterwards."
At that time, Clarence House refused to address the reports directly and instead said in a statement, "We are not commenting on Prince William's private life."
2010 in an interview with ITV News after announcing their engagement,
William explained exactly why the couple split.
"We were both very young," he answered the question.
"It was at the university, we found each other as such as well as other characters and things, it was our aspiration to find our own way and we grew up."
During the interview, Kate added, "I think I … was not very happy at the time, but in fact it made me a stronger person.
"You find things about yourself that you may not have realized, or I think you can use up a lot in a younger relationship, and I appreciate that time for myself, even though I did not think it then. Looking back. "
Prince William suggested during a trip to Africa in 2010 with the engagement ring of his deceased mother.
The couple got married the following year and now has three children – Prince George, Princess Charlotte and Prince Louis.