Princess Diana once made her two boys promise to "never let anyone come between them", her psychic friend has claimed.Simone Simmons, who the Prince of Wales used to consult before her passing, said William and Harry vowed to "be best friends" and keep their mum's wish.She says they gave her a big hug to seal the deal.Robert Lacey discusses Ms Simmons' recollection in an updated edition of his book, the Battle of Brothers, where Diana told the boys: "You must promise me that you will always be each other’s best friends."And never let anyone come between you."Royal historian Lacey goes on to write: "Both boys promised they would keep to that, Simmons remembers."They high-fived each other and gave their mother a big cuddle."‘Anybody would.
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