Playboy founder Hugh Hefner has accused his 25-year-old former fiancée of lying after she took a parting shot at him, saying they only had sex once and she was not turned on by him.

Crystal Harris, who called off the California nuptials with the 85-year-old days before the planned wedding in June, also said Tuesday that she had never seen her former husband-to-be naked.

"Crystal lied about our relationship on Howard Stern but I don't know why. Maybe a new boyfriend?" he tweeted late Tuesday, according to celebrity bible People magazine, which said the tweet had since been deleted.

In tweets still viewable he accused Harris of dishonesty in other ways, saying: "Crystal convinced me that she adored me. That was the first lie."

But he added: "I feel sorry for Crystal... She seems lost," insisting he was "pro-Crystal" and adding that he was "happy to be in a better place with new girlfriends Anna Sophia Berglund & Shera Bechard."

On Tuesday, Harris told "shock jock" Howard Stern "I'm not turned on by Hef, sorry," adding that the only time they made love it lasted "like two seconds... Then I was just over it...

"He doesn't really take off his clothes... I've never seen Hef naked."

Hefner asked Harris to marry him during a party last Christmas Eve, and a wedding had been planned last month at Hefner's Playboy Mansion, a luxurious Gothic-style mansion in Beverly Hills.

But just days before, he tweeted: "The wedding is off," adding" "Crystal has had a change of heart."

At the time Harris did not explain why she dumped Hefner, except to say on her Twitter account that the decision came after "much deep reflection and thought" and that she continues to have the "utmost respect for Hef."

On Wednesday, Hefner also sought to explain a comment he made after the wedding was called off, apparently voicing relief that he had not married Harris.

"When I said, 'I missed a bullet' when Crystal left, I didn't mean I didn't love her," he said. "I meant that I realized she didn't love me."

The wedding would have been Hefner's third.

Follow Emirates 24|7 on Google News.