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Prince Harry has reportedly been dumped by his new girlfriend, model Cressida Bonas, 23, following his nude antics in Las Vegas.

A Leeds University graduate who has been dating the Prince over the summer, Bonas, is said to have been "humiliated."

"He's ruined his chances now," a friend of Bonas told the U.K.'s Sunday Mirror, adding that the 23-year-old daughter ofSixties cover girl and banking heiress Lady Mary-Gaye Curzon, said she felt "humiliated" following the release of naked pictures of Prince Harry partying with other women in Sin City.

Bonas at the UK premiere of The Dark Knight Rises on July 19/image courtesy of Zimbio

"Cressida saw a future with him, but he clearly isn't as serious about her as claimed to be. She's humiliated." Prince Harry, third-in-line to the British royal throne, and Bonas reportedly enjoyed dates in London and were seen attending the premiere of The Dark Knight Rises together on July 19.

Recently, the aspiring actress flew to the Caribbean island of Necker with the royal as a part of a group. "They had been for a few dates, including one just before Necker," the friend said.

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While The Clarence House continues to stay mum on the scandal ("We have no comment to make on the photos at this time," a rep for the royal family told TMZ in the wake of the scandal) - sources close to the Prince say he is disappointed by his poor choices.

"He feels he has let himself down and is very disappointed with the fact that he allowed it to happen," a source tells the U.K.'s Sunday Times.

The paper also says that it's unlikely Harry will attend the opening ceremony of the Paralympic Games this week as originally planned.

Meanwhile, Rosa Monckton, a close friend of Harry's late mother, Diana, Princess of Wales, stands by the 27-year-old.

"He is absolutely entitled to a private life," she tells WHO Magazine. "He has a full-time job and he is a full-time serving member of the armed forces. They all need to let their hair down."

Although Monckton acknowledges that Harry is "guilty of a lack of judgment," she goes on to say, "But that's young men for you … It's classic of a young officer. They work very hard and they play very hard. It's a very simple thing."

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