'Brady Bunch' Maureen McCormick did cocaine, slept with her TV brother? Make it stop!

MaureenmccormickWhat was really going on behind the scenes on "The Brady Bunch?"

A lot!

Maureen McCormick, who played the adorable Marcia Brady on the popular sweet and silly '70s sitcom, is now revealing intimate details about her secret life of cocaine binging, trading sex for drugs and dating Greg Brady, her TV sibling.

OK, icky. I mean, we know they weren't really brother and sister, but still ...

In "Here's the Story: Surviving Marcia Brady and Finding My True Voice," she reveals hot romances with Michael Jackson and Steve Martin as well as an offscreen love affair with Barry Williams, who played her brother, Greg Brady.

Seems even she felt it was a bit depraved.

"We couldn't hold back any longer," she writes of their "Brady Bunch" filming in Hawaii. "It was our first kiss, and it was long, passionate and deep. It was wonderful, too, though as we continued to kiss and press against each other so closely that we could feel each other's body heat, a part of me -- a tiny part, admittedly -- said to myself, 'Oh my God! I'm kissing my brother. What am I doing?'"

Read the book if you want to know more about McCormick's struggle with drugs, cocaine binges, parties at the Playboy Mansion, an unwanted pregnancy and trading sex for drugs.

Do we really want to know about this? Will you buy and/or read her revealing book?

Or would you rather keep your fond childhood memories and that secret crush on Marcia Brady?

Photo: Maureen McCormick at the 2008 CMT Music Awards.
Credit: WireImage