King Charles rift with Prince Harry boils down to one major issue

King Charles is seemingly adamant to hold a grudge against his younger son Prince Harry, despite his love for him.

The monarch is unable to shake off the claims the Duke of Sussex made in his explosive memoir and may never forgive him for it, according to royal biographer Christopher Andersen.

“I think people have to realise that the one thing that Charles finds unforgivable is criticism of Camilla,” the royal author said of the feud between Charles and his son in Fox News Digital.

Anderson claimed that “no criticism” accepted over Camilla and “unfortunately for Harry” he stated “some pretty devastating things about her.”

Prince Harry “made it clear that he felt she was the villain in the piece. I think that still bothers the king, and I don’t know that it will be easy for him to [forgive]. I don’t think they’ll ever forgive Harry for that.

Until King Charles and Prince Harry are able to work out this matter, the Duke “is on his own,” Andersen claimed.

He also added that Harry still "resents" Camilla, which will make the reconciliation even harder than it already is.

Previously, reports suggested that the monarch is open to reconciliation with his estranged son especially after Harry rushed to meet his father after his cancer diagnosis.

However, it appears that the rift between the father and son is unchanged.