Prince William 'worried' about Prince Harry after tell-all documentary: report

Prince Harry and Meghan Markle got more candid than ever in a new documentary that aired in the UK on Sunday night, and sources close to Kensington Palace say that Harry's revelations in particular left his brother, Prince William, "worried" about him.

BBC cites an insider who also said that there's "a view" in the royal family's inner circle that the Duke and Duchess of Sussex are in "a fragile place" amid their disclosure in the ITV film that they're struggling amid intense media scrutiny as they continue to navigate parenthood together.

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In the documentary, "Harry & Meghan: An African Journey," which will air on ABC in the US his week, Harry disclosed that mastering his mental health requires "constant management" on his part.

"I thought I was out of the woods and then suddenly it all came back, and this is something that I have to manage," he revealed. "Part of this job is putting on a brave face but, for me and my wife, there is a lot of stuff that hurts, especially when the majority of it is untrue."

Meghan also explained that she struggles with the constant international attention from media and tabloids, while revealing that some of her friends warned her about what the coverage of her life would be like ahead of her wedding.

"I don't think anybody could understand that, but in all fairness, I had no idea -- which probably sounds difficult to understand here -- but when I first met my now-husband, my friends were really happy because I was so happy, but my British friends said to me, 'I'm sure he's great, but you shouldn't do it, because the British tabloids will destroy your life,'" she said. "And I very naively...we're American, we don't have that there, 'What are you talking about? That doesn't make any sense. I'm not in tabloids!' I didn't get it."

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Meanwhile, the BBC report that William is concerned about his younger brother also follows Harry's apparent confirmation that the famously close brothers have had some trouble with their relationship behind closed doors recently, saying that they have their "good days" and "bad days."

"We are brothers. We will always be brothers," he added. "We are certainly on different paths at the moment but I will always be there for him as I know he will always be there for me."

Harry and Meghan, who are "taking legal action" against a variety of tabloids for overstepping their boundaries, will spend six weeks out of the public eye as they enjoy "family time" around the holidays.