He may be the one who will one day sit on the throne and be called King, but that doesn’t mean Kate Middleton lets Prince William do whatever he wants—especially if his actions have a direct impact on her.

According to Express UK, following the couple’s split in 2007, which occurred because the heir to the throne allegedly felt “claustrophobic” in his relationship, photographs of Prince William quickly surfaced as he partied at a London nightclub. In a resurfaced report from that same year, Middleton, despite no longer being his girlfriend at the time, felt humiliated by the news and wound up issuing him an ultimatum.

“It was the first such warning she had dished out over the course of their four-and-a-half-year relationship. Kate had had enough and words were exchanged,” the report stated.

An alleged friend of the future Duchess reportedly spoke up at the time as well, stating that she felt his antics were affecting her own image and making her look bad.

“She has coped for years with girls flinging themselves at her boyfriend and for a while, she found it humorous and even flattering,” the friend said. “But after his recent behavior, she gave him an ultimatum and told him that over the time he behaved like that in public he was cheapening her image as well as his own.”

“She told him she wasn’t prepared to be treated like a doormat and that his carefree behavior was affecting her image,” the friend added. “In the past, she had always let go of things like that, but this really bothered her.”

It appears the ultimatum worked, however, as the couple eventually went on to reconcile a few months later and resume their relationship, which led to an engagement in 2010 and wedding in 2011. The pair have since gone on to also welcome three children together—Prince George, Princess Charlotte and Prince Louis.

Kate Middleton
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend Easter Sunday service at St George's Chapel on April 21, 2019 in Windsor, England. Getty Images/Samir Hussein/WireImage