Hugh Hefner's ex fiancee (as of Tuesday) Crystal Harris gave an interview to Ryan Seacrest Wednesday morning to explain why she suddenly called off her wedding only days before it was scheduled to happen (it was scheduled for Saturday).

The Playmate started off the interview with "Hi! I'm doing good!" to which Seacrest responded, " ... You sound chipper." She quickly changed her tune, saying, "I'm doing OK."

Says the Playmate on 102.7 KIIS FM:

"I called it off because I didn't think it was the right thing for me to do. ... For a while I've been having second thoughts ... I didn't think it was really fair to him. ... It was all happening too fast for me."

Internet rumors Tuesday were that the two had a blow-up fight and Harris, 25, moved out. She paints the incident in a more calm light.

"It was mutual between Hef and I. There was no fight ... He understood. We both agreed that it wasn't the best idea to get married. ... He was doing it for me because he thought it was what I wanted."

Hef seconded that via Twitter, saying:

"The TMZ report that Crystal & I "had a nasty argument," prompting her to call off the wedding, is untrue. There were no arguments."

Ultimately, Harris says that the Playboy life Hefner, 85, leads was too much for her. "This isn't the lifestyle for me; multiple girls all around, it's not the lifestyle I wanted," she said.

Harris told Seacrest that Hef is "doing great."

She confirmed that she has moved out of the Playboy mansion, but, denied the rumor that she's dating someone else -- supposedly Dr. Phil's son, songwriter Jordan MacGraw. "Of course, I have plenty of friends in the music business," she said.

"Next steps are work on more music and excited for the single to come out ... I'm working on a whole album. ... I sing, I write."

The former Girl Next Door also talked about what her relationship is with Hef now and whether Hef will marry again ... see what she said after the jump!

Hugh Hefner and Playboy playmate Crystal Harris will not be tying knot this weekend as planned. Hef just tweeted, "The wedding is off. Crystal has had a change of heart."

Reports claim Hefner, 85, and Harris, 25, got into a huge fight over the weekend resulting in Crystal pulling the plug on the nuptials. As for the wedding, it was to take place this Saturday at the Playboy mansion and over 300 people had already been invited!

Harris, who was to wear a pink Romona Keveza wedding dress, has reportedly moved out of the mansion.

Ironically, the gorgeous blonde recently taped a Funny or Die video about the 60-year age gap between she and Hef. Watch it ... after the jump.

Hugh Hefner was never one to concern himself with other people’s opinions, and the original Playboy admits he was far from upset at the jokes Ricky Gervais made about his age ... and his private parts.

To recap Sunday night's show, Gervais launched into the former eternal bachelor, saying:

"Congratulations to Hugh Hefner, who is getting married at age 84 to 24-year-old beauty Crystal Harris. When asked why she was marrying him, she said, 'He lied about his age. I thought he was 94.' Calm down; just don't look at it when you touch it."

LOL!

But the 84-year-old newlywed wasn't bothered. He took to his Twitter revealing:

"The Golden Globes was a blast. They made fun of everyone, including Crystal & me. A great night. I'm used to cheap shots ... It goes with the territory. It's ironic that living with 3 young girls prompted a hit TV show, but marrying one prompts humor. Age is still just a number. Jokes about age will begin to seem lame as we all begin to live longer, fuller lives."

We agree Hef! Who cares what people say? When you're engaged to a hot 24-year-old Playboy Playmate, life's pretty sweet no matter how old you are.

Playboy founder Hugh Hefner is engaged to girlfriend Crystal Harris after a Christmas proposal. Hefner Tweeted today: "When I gave Crystal the ring, she burst into tears. This is the happiest Christmas weekend in memory...I got what I was hoping for for Christmas...Crystal's love."

To clear up any doubts, Hef later added: "Yes, the ring I gave Crystal is an engagement ring. I didn't mean to make a mystery out of it. A very merry Christmas to all."

It will be the Girls Next Door star's third marriage. He married his first wife Mildred in 1949, with whom he had two children. That marriage lasted for ten years. In 1989 he wed Playmate of the Year Kimberly Conrad and they had two sons. They divorced last year but had previously separated.

When Hugh Hefner calls, you answer the phone ... and for Playboy playmate Karissa Shannon, that holds true even if it's during sex.

Steven Hirsch, founder of Vivid Entertainment, has personally watched the two-hour "kinky" sex tape featuring Hef's former girlfriend and her boyfriend, Sam Jones III. Even Hirsch was shocked to see the blonde beauty take the Playboy founder's phonecall during such an intimate moment. Whips, chains, bondage ... we're told it's all in there.

Hirsch, who wants to talk to Karissa and Sam about their options for releasing the tape, tells X17online exclusively:

"There is no doubt this is the hottest tape ever. In terms of the sex, it's really good and really hot. May make sense to cash in and let this thing get out there. Karissa is one of the most beautiful girls to ever have a celebrity sex tape."

As for who released the footage, Hirsch confirms that he did not receive it from Shannon or Jones. He believes the couple didn't initially make the tape to sell because "she's not totally made up."

Hirsch also tells X17online that he has yet to see any XXX footage featuring Heidi Montag and Spencer Pratt, but he hasn't dismissed the reality couple yet. He still believes there is footage out there of the two, however in the tape he currently has, it only features Karissa and Sam getting busy.

It's no secret that millions of dollars are at stake. Will Karissa and Sam bite? The clock is ticking ...

Karissa Shannon, former star of Girls Next Door, hit up Voyeur in West Hollywood with her boyfriend, actor Sam Jones III.

Watching a Playmate wolf down a bag of Lays isn't exactly the sexiest visual, but props to Miss Shannon for showing us that even bunnies indulge in junk food once in while.

Karissa and twin sister Kristina will be starring alongside Jayde Nicole in a reality show special called The Bunny House ... in which the Playmates will show how they're living their lives post-mansion. The E! special is already in the can, and if viewers tune in when it airs in early August, sources close to the project tell us that the cable network could possibly make it into a series.

Playmate drama ... loves it!

...and they just keep getting younger and younger!

Hugh Hefner partied at club MyHouse last night, and naturally, he showed up with a limo full of Playboy playmates. Think these girls are an improvement on Holly, Kendra and Bridge?

It's not actually until April 9th, but this weekend Hef celebrated his 83rd in style: surrounded by beautiful blondes, natch!

Even his ex, Kendra was there! But where were Holly and Bridget?