Expert says Prince William is struggling to keep his distance from Prince Harry.
The Duke of Cambridge, who was left alone when brother Harry decided to move to America with wife Meghan Markle, is still mourning the loss of his brother.
An unnamed source said: "[William] alternates between grieving for what he has lost and being really angry about what his brother has done."
"He really loves Harry and feels like he's lost the only person other than his wife who understood this strange life of theirs."
Another friend told the Mail: "The truth is they've found some common ground again at some point.
"William is also very principled and believes that Harry has crossed a boundary. He is charged after charge, knowing that silence is the family's only option as they do not want to be caught in a public slanging match."
"William is absolutely allergic to drama but Harry has made sure his family's clothes are being broadcast globally."