Ruler William and Kate Middleton’s relationship wasn’t generally a fantasy.

Robert Jobson’s new memoir, “Catherine, the Princess of Grains,” uncovers the conditions behind when the imperial couple — who are currently hitched with three youngsters — momentarily separated in 2007, three years before they got ready for marriage.

As per the book, William, 42, and Kate, 42, were getting really difficult as a couple at that point, with Kate in any event, catching a welcome to William’s tactical graduation in December 2006.

Prince William and Kate Middleton in February 2007

However, Jobson wrote that “Catherine knew William wasn’t in any hurry to propose, and the truth is she was prepared to wait until he was ready. After all, they were in love — weren’t they?”

When William unexpectedly canceled their 2006 New Year’s Eve plans, Kate knew “something was wrong,” the book said.

Not long after, William called his then-girlfriend and broke up with her. He allegedly said they both needed “a bit of space” to “find our own way” and couldn’t promise a proposal.

Prince William and Kate Middleton at the Cheltenham Festival Race Meeting

“In an emotionally charged 30-minute conversation, they both acknowledged they were on ‘different pages,’ ” wrote Jobson. “It was a devastating blow to Catherine, who felt doubly let down at being dumped over the phone.”

After the split, William allegedly went out at Mahiki nightclub in London, while Kate traveled to Dublin with her mom, Carole Middleton, and Ibiza with a friend.

Kate “resolved to hide her pain from the outside world” despite being “distraught” about the breakup, Jobson said.

Kate Middleton at the Cheltenham Festival on March 16, 2007

Kate Middleton crying after her breakup with Prince William

Eventually, William started having “second thoughts” and reunited with Kate at a “Freakin Naughty”-themed costume party thrown by jockey Sam Waley-Cohen.

Jobson wrote: “She’d arrived dressed as a nurse, and William had made a beeline for her. They then spent the first part of the evening deep in conversation before hitting the dance floor, where they ended up kissing.”

After reconciling in 2007, William and Kate got engaged in 2010 and tied the knot in a lavish ceremony at Westminster Abbey on April 29, 2011.

Prince William and Kate Middleton in November 2023

The Prince and Princess of Wales addressed their short breakup in an ITV interview when they were engaged.

“We both were very young, it was at university, we were sort of both finding ourselves as such and being different characters and stuff,” William said at the time. “It was very much trying to find our own way and we were growing up, and so it was just sort of a bit of space and a bit of things like that and it worked out for the better.”

Kate added: “And I think I, at the time, wasn’t very happy about it, but actually, it made me a stronger person. You find out things about yourself that maybe you hadn’t realized, or I think you can get quite consumed by a relationship when you are younger, and I really valued that time for me as well although I didn’t think it at the time. Looking back on it.”

Now married for over a decade, William and Kate are proud parents to Prince George, 11, Princess Charlotte, 9, and Prince Louis, 6.

Kate Middleton with Princess Charlotte at Wimbledon on July 14, 2024

Kate was diagnosed with cancer earlier this year, forcing her to step away from her royal duties and focus on her health as William has taken on an extra workload.

But Kate’s health battle has actually done wonders for her and William’s marriage.