Prince Harry and Meghan Markle reportedly felt "cut adrift" and frustrated by Prince William and Kate Middleton's royal roles before they decided to leave the UK for America according to a new biography.
Extracts from the book, Finding Freedom: Harry, Meghan and the Making of a Modern Royal Family, were released this weekend and The Sun reports it suggests the Sussexes felt stifled and ignored by the Royal Family.
It also suggests they butted heads with palace courtiers, who stressed "service to the Crown" above all else, over future plans.
Apparently, the book reveals that the couple was upset that William and Kate had more prestigious duties than they did.
Authors Omid Scobie and Carolyn Durand, who are described as the Duke and Duchess of Sussex's "cheerleaders" say they wrote the book "with the participation of those closest to the couple".
The Daily Mail reports the book's sources will reveal the "pressure cooker" of anger and resentment the couple felt as royals.
When the couple were married in 2018, they were seen as the future of the Royals, however, the book says they felt "unsupported" in what they really wanted to do after that.
A source told The Sun, "They feel they were owed an awful lot of credit for their popularity and success of the wedding — which led to a public outpouring of support — that they did not get."
The book will also claim that it was solely Harry's decision to leave the Royal Family and that the Queen was "blindsided" when the pair announced on Instagram they would be leaving.
Sources spoke to The Telegraph and revealed that before meeting Meghan in 2016, there was tension between Harry and William.
"It wasn't a rivalry between the brothers but more a sense that they would be competing over who would lead on their various issues," they said.
"Harry felt awkward as a plus one. They'd turn up at premieres and there was this sense that he felt a bit like a spare part.
"Long before Meghan he wanted to change things. He wanted to control his own narrative. He would say, 'Why can't we use social media or record videos and cut out the press?'"
Daily Mail reports there are fears at Buckingham Palace that the book will destroy any hopes that Harry and Meghan will repair their relationships with the Royal Family.