Why was Queen Elizabeth II concerned about Prince Harry in love with Meghan Markle?

A new memoir, which has not yet been published, claims that Queen Elizabeth II thought her grandson Prince Harry was "perhaps a little over-in-love" with his future wife, Meghan Markle.

Gyles Brandreth, a British broadcaster, is the author of "Elizabeth: An Intimate Portrait," a biography of the late royal, according to the New York Post.

In the biography, he wrote, "This was as far as she came – to my knowledge at least – to ever uttering a word against the new Duchess of Sussex."

The book, which will be released in December, claims that the late British monarch was "really happy" when Harry revealed he was marrying Markle.

An excerpt from the forthcoming biography that was published in a prestigious UK newspaper was cited by the New York Post and stated, "She liked Meghan and told lots of people so. And she did everything she could to make her future granddaughter-in-law feel welcome."

Even the Sussexes' chat with Oprah Winfrey, according to the New York Post, failed to dissuade the Queen.

"I can tell you, because I know this, that the Queen was always more concerned for Harry’s well-being than about ‘this television nonsense’, meaning both the Oprah Winfrey interview – which caused so much controversy – and the lucrative deal the Sussexes made with Netflix," wrote Brandreth, a former MP who has long known the royal family.