Kendra Wilkinson and Holly Madison were both girlfriends to Hugh Hefner at the same time and lived in the Playboy Mansion together. Madison recently wrote a memoir, "Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny," about her time with Hefner at the mansion. In her book, Madison claimed life was "hell" in the mansion. Now Wilkinson has come to the defense of ex-boyfriend Hefner in a People.com interview where she says Madison has nothing but bad intentions.

According to Wilkinson, Madison is just out for "revenge" since Hefner would not marry or have children with her. "Since day one of living at the mansion, this person, Holly, you could tell she had an ulterior motive every minute being at the mansion," she told People.com. "That motive was as clear as day: she wanted Hef's kids, she wanted a piece of Playboy and she wanted to marry Hef for, obviously, his will. That didn't happen, so what do you think is going to happen? Revenge. We're witnessing some revenge here."

Wilkinson then goes on to express how grateful she is to Hefner and Playboy saying she would not have met her husband or had her two children without either.

Hefner released a statement about Madison's book, claiming she is "trying to stay relevant and rewrite history."

"Down the Rabbit Hole: Curious Adventures and Cautionary Tales of a Former Playboy Bunny" is available for purchase now.