When Prince Harry introduced his then-girlfriend Meghan Markle to his brother, Prince William, the two were said to have “clicked” right away.

William was very fond of her, although she believed at the time that the relationship between the two would be “trying” from the off, according to Omid Scobie and Carolyn Durand, authors of the Pro-Sussex biography Finding Freedom.

“She was self-aware enough to understand that the brothers were wary of women who were more interested in their titles than their wellbeing,” Scobie and Durand wrote in the book. “And she couldn’t have come from a more different world than that of William, his wife, and most of their friends.”

The first-ever encounter between William and Meghan was quite pleasant for both of them.

William was reported to have said to his brother’s girlfriend: “I was looking forward to meeting the girl who has put that silly grin on my brother’s face.”

However, despite the initial connection, William believed Harry was rushing things with Meghan and advised him to take it slow, which Harry didn’t like.

“William soon began to wonder about some of Meghan’s traits and motivations,” a source told the Daily Mail, as revealed by the Express.

“He was worried that at times she seemed to be more concerned about her personal progression or profile over the wider goals and aims of the Royal Family.

The future king was said to have told his brother, “Don’t feel you need to rush this,” and “Take as much time as you need to get to know this girl.” Allegedly, Harry got upset by the phrase “this girl,” but all William wanted was “to make sure that Harry wasn’t blindsided by lust,” Omid Scobie wrote.

Eventually, William decided not to interfere because he could see Meghan was trying to do adjustments in order to fit in the family.

When it comes to Meghan and Kate, their relationship hasn’t been a close one since the beginning. The reason why, according to royal authors Omid Scobie and Carolyn Durand, was that the two never made real efforts to get to know each other better.

“Meghan would agree with the assessment that the Duchesses were not the best of friends,” they wrote in Finding Freedom. “Their relationship hadn’t progressed much since [Markle] was Harry’s girlfriend.”