Prince William was “unwilling to commit” to Kate Middleton.

The Duke and Duchess of Cambridge’s love story was very different from the Duke and Duchess of Sussex’s. Prince Harry and Meghan Markle only dated for a couple of months before they got engaged and exchanged “I dos.”

Prince William and Middleton dated for almost 10 years. The couple also had two major splits during the course of their decade-long courtship.

According to Andrew Morton in his 2011 book “William and Catherine,” Prince William was not willing to commit to his then-girlfriend. This resulted in a trial separation in 2004, then they split again in 2007.

“It was a storm that had been brewing a long time, arising from his unwillingness to commit and the feeling his friends noted that ‘he could do better,’” Morton wrote.

“[Kate] simply wanted more from him, in terms of emotional commitment and support, than he was prepared to give at that stage of his life,” he continued.

One of Prince William’s close pals told the biographer that the couple had an up-and-down relationship at St. Andrews because of the royal’s “refusal to commit.”

In 2007, the Duke and Duchess of Cambridge parted ways again. During their separation, Prince William realized what he wanted in life and saw what he had given up after his split from Middleton.

According to royal correspondent Richard Palmer, when the couple separated Prince William had a “wild carousing” in a London nightclub. However, he started to miss Middleton but refused the idea of getting back with her.

“Prince William enjoyed a lonely trip to the cinema to cheer himself up after refusing to rule out an eventual reconciliation with dumped Kate Middleton,” Palmer said.

Prince William couldn’t get over Middleton. Shortly after their split, the couple reconciled and they never split again.

In 2010, Prince William and Middleton announced their engagement. During their engagement interview, the couple addressed their splits.

According to Prince William, at the time, they were still so young and were figuring out what they wanted in life. Meanwhile, Middleton confessed that she wasn’t happy about it and their trial separation made her a “stronger” person.

In 2011, the couple tied the knot at Westminster Abbey in London.