As Prince William prepares to settle down into fatherhood with expectant wife Duchess of Cambridge Kate Middleton, is his younger brother, Prince Harry, settling out of bachelorhood?

The notoriously fun-loving prince, 28, was spotted over the weekend with his former paramour, British model and socialite Cressida Bonas, the latest of recent sightings seeming to confirm that the pair are back "on" again.

Harry and Bonas, 24, were seen exiting The Rum Kitchen restaurant and bar in the trendy Notting Hill neighborhood of London this weekend. The pair was reportedly dining with Harry's cousin, Princess Eugenie, according to People magazine.

It was Princess Eugenie, the daughter of Sarah Ferguson, Duchess of York, and Prince Andrew, who reportedly introduced Bonas, the daughter of 1960s model Lady Mark-Gaye Georgiana Lorna Curzon, to her prince. The trio vacationed together, along with the rest of Eugenie's family, in the Swiss Alps last month, where Harry and Bonas were caught openly embracing on the snow-capped mountains of a ski resort in Verbier, Switzerland.

Bonas and Prince Harry were first spotted together at the London premiere of "The Dark Knight Rises" in July and reportedly partied together at the Necker Island estate of Virgin mogul Sir Richard Branson just before Harry's infamous trip to Las Vegas in August

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"She's an extremely fun girl but she's quite a wild thing too, and would have a nightmare if she was dating Harry," a source said of Bonas to the Daily Mirror in July.

After the couple's Swiss vacation, Prince Harry traveled to Lesotho where he visited projects supported by his charity, Sentebale.

This was the prince's first public engagement since returning from a tour of duty in Afghanistan as a pilot for the British Army, where he is known as "Captain Wales." In a series of interviews given upon his return, the prince indicated he would not be immediately following the route of his older brother, Prince William, in settling down.

"I don't think you can ever be urged to settle down," Harry said. "If you find the right person and everything's right, it takes time, for myself and my brother."

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Before the new photos appeared, it was reported that Harry's relationship with Bonas had cooled because of his time away in Afghanistan and her tiring of the circus that surrounded Harry in England.

"I think Harry is not afraid to tell us now that this is a girl who he's not afraid of making a commitment to," Victoria Murphy, royal reporter for the U.K.'s Daily Mirror, told ABC News of the seemingly invigorated relationship.

Harry brought longtime girlfriend Chelsea Davy to Kate and William's wedding in April 2011, but that romance fizzled after nearly seven years when Davy reportedly couldn't stand the limelight and paparazzi pressure that came with Harry's royal title.

In April, reports stated that Harry was "smitten" with Mollie King, 24, a member of the all-girl pop group The Saturdays, after the pair was spotted by British paparazzi singing karaoke with friends at London's Bunga Bunga club.