Cressida Bonas is making Prince Harry of Wales prove he is good enough for her love.

While most girls would jump at the chance to date the eligible royal, Bonas is showing the world she is different from Prince Harry's former flatnes. The stunning blonde has reportedly given the red-headed bachelor three months to clean up his act and show her he is serious about her.

It sounds like a regular relationship, but a source tells Now Magazine that is what the pair wants.

"She treats him like a normal guy not a prince," the source reveals. "She's given him a deadline to prove he's serious, because she doesn't want to put herself in the limelight if he isn't. She's quite tough with him."

The tough love seems to be one of the reasons the prince is so enamoured by Bonas. Despite being one of the world's most eligible bachelors, Prince Harry has not been involved in any long-term relationships since his on-again-off-again one with Zimbabwean blonde Chelsy Davy that ended in 2009.

Bonas has been linked with the royal since early 2012, but when Prince Harry's controversial Las Vegas photographs surfaced in the press the blonde was reported to have broken things off.

It's clear the beauty has chosen to give her prince another chance when the duo was snapped looking cozy at the Swiss Alps last week. The couple spent Prince Andrew's birthday at the slopes along with Princesses Eugenie and Beatrice, and witnesses saw the high-profile pair indulging in more PDA at the private celebrations.

Although Bonas is relatively new at the spotlight, the pretty 24-year-old model has strong connections in the social scene and even the royal family. Not only is she the daughter of sixties "It Girl" Lady Mary Gaye Curzon, but she's also a close friend of Princess Eugenie who was actually the one to introduced her to Prince Harry. Bonas' half-sister Isabella Calthorpe even dated (and reportedly dumped) Prince William.

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