Kate and William are among those couples who give the impression of having been married for a lifetime. Well in fact, let us tell you that this is indeed the case.

Although the big wedding took place in April 2011, the royal couple had been on their minds since 2007. They had made a pact-shaped promise and here they are a decade later - happily married!

In the new book by Royal Court writer Katie Nicholl, it is written that Prince William and Kate had discussed it early on that they would spend the rest of their lives together, since they were simply loved.

(As we speak, we wish your loved ones and ours were taking notes).

There, on the fabulous island, William assured his girlfriend that their bond would be long-lasting.

"For the first time, they talked seriously about marriage. With the ocean in front of them and the night sky, they made a pact to get married," the book says.

In fact, after this pact something happened and the pair split for a bit, but of course that period didn't last long. They had to carry out their promise!

?We were both very young. expresses William then.

After the reunion, the couple stayed connected for 3 years, until the Prince proposed to her in 2010. A year later, Kate Middleton officially became the Duchess of Cambridge!