The merits of being engaged to a multibillionaire, however doddering.

Hugh Hefner has let his runaway bride Crystal Harris keep her engagement ring and a Bentley despite the model breaking his heart by calling off their wedding at the eleventh hour.  

The blonde beauty returned to the Playboy mansion on Sunday (which incidentally was Father's Day) to return the jewellery, but she left with the pricey diamond still in her possession.  

Jilted Hefner allowed his ex-fiancee to keep the three-carat diamond ring worth an estimated 90,000 dollars as well as a Bentley.  

In return, the animal loving millionaire was very pleased to get the couple's King Charles dog Charlie back.