The Girls Next Door, also known as The Girls of the Playboy Mansion, is a reality television series which originally aired on E! The series was created by executive producer Kevin Burns and Hugh Hefner, founder of Playboy magazine.
The show was followed by four spin-offs, Kendra, Kendra on Top, Bridget's Sexiest Beaches, and Holly's World.
"I had planned to spend the rest of my life with Holly," he said, adding that he was "road kill" following their break-up.
"We tried to have a baby earlier this year and it didn't work out," he said.
The series focuses on the lives of Hefner's girlfriends who live with him at the Playboy Mansion.