Prince William and Prince Harry set their years-long feud aside to honour their grandmother the Queen last month, but sources say the ceasefire is now very much over.

A new book has laid bare the shocking reason Prince Harry, 38, ignored his brother’s text messages in reconciliation efforts – catapulting their hostilities back into headlines.

Sources tell Woman’s Day Harry is said to be “furious” that a text conversation with his brother has made its way into the public domain via respected royal journalist Valentine Low.

In Valentine’s new book Courtiers, he reveals that Harry cruelly snubbed an offer from William to meet up and discuss their differences after the Sussexes confirmed during their tour to South Africa that there were indeed direct tensions with the then-Duke and Duchess of Cambridge.

“We are certainly on different paths at the moment,” Harry sneered at the time.

William reportedly began to have concerns about the Sussexes’ disdain in the royal family immediately after the interview during the ITV documentary while they were on their 2019 tour of South Africa, realising the family might be “in crisis”.

“William appears to have been taken aback at such a stark portrayal of his brother and sister-in-law’s unhappiness. He realised they were in crisis,” Valentine states in the book.

“The day after the documentary aired, William WhatsApped his brother to ask if he could come and see him. This put Harry and Meghan into a spin. What should they do?

“Initially, Harry was in favour. Then he spoke to his brother again and asked him who he would tell.

“William explained that he’d have to clear his schedule, which would mean telling his private secretary. At that point, Harry told him, ‘Don’t come.'”

Sources confirm that sadly now “any chance of building reconciliation has fallen by the wayside” following the book’s revelations.

Insiders close to 40-year-old William say he’s heard Harry is enraged that their text encounter was eventually leaked to the press, despite his best efforts to keep their conversations and peacekeeping attempts private.