Crystal Harris’s love for Playboy boss Hugh Hefner began and ended at the bottom line. She apparently had big plans to play Hef for a fool for a big payoff. But no one took up her sleazy offer.

The 25-year-old model reportedly approached various publications asking for a $500,000 media deal to humiliate Hefner, 85, at the altar a la Maggie Carpenter in the 1999 movie “Runaway Bride.”

Talk about the ultimate gold digger.

“Crystal wanted to ditch Hef at the altar. Her plan was to walk up the aisle and say she couldn’t go through with it.

Check out Crystal’s photos; click to enlarge.

“The wedding was to be filmed for a reality special, and her refusal to marry him would be a sensation,” according to The New York Post.

“She was looking for a tie-in deal of around $500,000 for the exclusive ‘I ditched Hef at the altar’ interview. While there was interest, Crystal didn’t get an offer anywhere near half a million,” the source said.

However, insiders insist her feelings for Hef had long since gone stale.

Kristina Shannon claimed Harris was bored of “watching classic movies every night”, adding the Playboy mansion can become a “nightmare” if you are unprepared to do as Hugh wishes.

Kristina and her twin Karissa began dating the media mogul around the same time as Crystal before being dumped 18 months ago so Hugh could have an exclusive relationship –

“Living in the Playboy Mansion is like being in a golden prison. It should be every girl’s dream. But if you’re not willing to do exactly what Hef says it can become a nightmare,” she told London’s Daily Mirror.

Although Hefner was spared the humiliation of being dumped at the altar, the July issue of his iconic magazine features Crystal on the cover and introduces her as Mrs. Crystal Hefner.

She’s dressed in Hefner’s trademark sailor cap and smoking jacket.

For his part, Hefner is still in the clouds about what went down.

“I didn’t see any of this coming, but I’m glad things went wrong before the marriage instead of after. Live & learn.” he wrote on Twitter.

Hugh also revealed the news came as such as shock, even Crystal’s best friend had no idea about it.

Crystal’s interview with KIIS-FM DJ Ryan Seacrest (June 15) wasn’t much help.

“Crystal did an interview with Ryan Seacrest this morning to explain everything, but I still don’t have a clue,” Hef tweeted.