“William’s done everything in his power to help his brother over the years and feels totally let down by his ‘reckless’ and ‘selfish’ actions,” the source said. “The way he sees it, Harry’s thrown all the good advice he gave him back in his face.”
Kate, 38, reportedly was left with hurt feelings as well.
“When Harry was feeling low or had problems, William was always there for him, as was Kate,” the insider said. “Kate’s incredibly hurt too. She acted as a mentor to Harry before Meghan came into the picture and hates seeing her husband so upset.”
The source added that the Queen was "urging" the brothers to present a united front.
“Right now, William and Harry refuse to make amends — they’re both being stubborn, especially Harry,” the source added.
William recently commented on the matter, reportedly telling a friend, “I’ve put my arm around my brother all our lives and I can’t do that anymore... I’m sad about that. All we can do, and all I can do, is try and support them and hope that the time comes when we’re all singing from the same page. I want everyone to play on the team.”
The meeting is said to be an opportunity for the family to “talk things through.”
It is currently unknown if Kate will be present for the meeting, but royal experts have said she’s the Queen’s “number-one priority.”
It has also been reported that Markle possibly will join via phone.