Perhaps desperate times do call for desperate measures, because Tori Spelling really isn't holding anything back in her latest book, "Spelling It Like It Is."

In the new tell-all, the former "90210" star confesses that she and husband Dean McDermott filmed a sex tape on Valentine's Day in 2009, reports RadarOnline.

"Afterward, I checked my angles and they were good so I allowed him to keep it," the 40-year-old mother of four writes. "He uploaded it to our computer at home … without password protection."

It was a regrettable move on their part, since sex tapes have a habit of not staying private. Spelling writes that two years later, one of her husband's so-called friends bragged that he found the couple's sex tape on McDermott's computer. He had then copied it in an attempt to sell it to anyone who would pay the right price.

Either no one was interested in a Tori Spelling sex tape, or the couple managed to scare him off with a letter from their lawyer. "We never heard from him again, and the incident went away," she writes.

Spelling's book is simply a treasure trove of revelations: She also admits that she lied about how she lost weight after giving birth to her fourth child, Finn Davey, in August 2012. Dressed in a purple bikini on the cover of Us Weekly, Spelling told the magazine that she lost 45 pounds by swimming. In reality, the actress was starving herself.

She writes that she couldn't exercise for months after giving birth for fear that the stitches from her caesarian section would burst open. Also, she just doesn't care for the gym. "I really don't exercise much, period. So I took off my weight the old-fashioned way. I like to call it the Just Keep Your F--king Mouth Shut and Eat Air diet. It's all the rage."

When it came time to pose for Us Weekly, Spelling's weight loss plan just wasn't going to jive with magazine readers. "My publicist had given me clear instructions about what to say about my weight loss," she explains. "Women didn't want to know that I had lost weight through dieting, not exercising. I didn't want to be the a--hole who didn't work for it. So I said that I swam. It was sort of a bad choice. I can't do much more than a doggy paddle."

Between outing her dieting lies and calling Katie Holmes "plastic" after an awkward encounter, it makes you wonder what Spelling will reveal in her next tell-all book.

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