Prince Harry was "terrified" that Meghan Markle would break up with him when he wrote his 2016 letter calling out the British press and social media users, his royal biographer has claimed.

Royal commentator Angela Levin -- who interviewed and joined Prince Harry on his royal duties for a year to write her 2018 biography about the Duke of Sussex -- made the claim while addressing the royal family's recent removal of Prince Harry's 2016 statement from their website.

During a chat with GB News host Nana Akua, the veteran journalist said she interviewed Prince Harry right after he penned his "very, very angry letter to the press" condemning the racism and harassment his then-girlfriend was facing after news of their romance became public.

"In 2016, I went to see him, and I was told by one of his aides, 'Be very, very careful because he's just written a letter, and he's terrified that Meghan's going to leave him. So go very carefully; otherwise, he'll throw you out,'" Levin told Akua.

Prince Harry and Meghan Markle
Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex wave from the Ascot Landau Carriage during their carriage procession on Castle Hill outside Windsor Castle in Windsor, on May 19, 2018 after their wedding ceremony. Aaron Chown - WPA Pool/Getty Images

The royal commentator said she found the royal aides' advice "odd" considering she was about to interview Prince Harry at the time but heeded their warning.

"That's what the issue was. He was terrified that Meghan was going to leave him. It was love at first sight from his point of view," Levin said of Prince Harry.

Levin suggested that Prince Harry, who tied the knot with Markle in 2018, was likely upset now that the letter was gone.

"He's very cross because he felt it should be against the press," she claimed. "However, it doesn't work like that because they've moved forward, and they don't want to have this distancing themselves from Harry and Meghan."

Prince Harry, Duke of Sussex, Meghan Markle, Duchess of Sussex
Britain's Prince Harry, Duke of Sussex (R), and his wife Meghan, Duchess of Sussex, pose for a photo with their newborn baby son, Archie Harrison Mountbatten-Windsor, in St George's Hall at Windsor Castle in Windsor, west of London on May 8, 2019. Dominic Lipinski/AFP via Getty Images

Late last month, Time magazine and several other outlets reported that Prince Harry's groundbreaking letter from 2016 was no longer available on the royal family's website.

According to reports, the statement was likely removed in December last year.

In the statement first released by his spokesperson in November 2016, Prince Harry said Markle had been subjected to "a wave of abuse and harassment" from the British press and social media users.

The Duke of Sussex slammed the smears, "racial undertones of comment pieces," and the "sexism and racism of social media trolls and web article comments" about the former "Suits" star.

According to the letter, Prince Harry was "worried" about Markle's safety and "deeply disappointed that he has not been able to protect her" from the "storm" she'd faced just months into their relationship.

Prince Harry Duke of Sussex, and Meghan Markle, Duchess of Sussex
Britain's Prince Harry (2ndR), Duke of Sussex, and Britain's Meghan (R), Duchess of Sussex, react as Lagos State Governor, Babajide Sanwo-Olu (unseen), gives a speech at the State Governor House in Lagos on May 12, 2024 as they visit Nigeria as part of celebrations of Invictus Games anniversary. Kola Sulaimon/AFP via Getty Images

Prince Harry opened up about his decision to pen the letter in his memoir, "Spare."

According to the prince, he rejected his aides' advice not to speak out at the time as he felt a "course correction" was needed, People reported.

"We needed a statement out there," Prince Harry wrote. "Within a day we had a draft. Strong, precise, angry, honest."

Despite spreading "everywhere," however, Prince Harry said the letter ultimately failed to put a stop to the "onslaught" against Markle.

The abuse and harassment toward Markle were among the reasons cited by Prince Harry for their decision to step back from royal duties and leave the U.K. in early 2020.

Prince Harry and Meghan Markle
Prince Harry, Duke of Sussex, and Meghan, Duchess of Sussex after attending the National Service of Thanksgiving at St Paul's Cathedral during the Queen's Platinum Jubilee celebrations on June 3, 2022 in London, England. Toby Melville - WPA Pool/Getty Images
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Prince Harry, Meghan Markle