Spencer Pratt Writing Tell-All ‎Book About Heidi Montag

By Erica Bowen on August 19, 2010

Spencer Pratt, Heidi Montag, divorce, divorcing, split, break up, breakup, marriage, tell-all, book, pictures, picture, photos, photo, pics, pic, images, image, hot, sexy, latest, new, 2010HOLLYWOOD, Calif. — Spencer Pratt isn't finished with Heidi Montag just yet.

The 26-year-old reality star tells Us Weekly that he's planning to share juicy details about the former couple's time together, including new scoop about Montag's rollercoaster relationship with her mother, Darlene Egelhoff.

"My last book, How to be Famous, didn't make the New York Times best-seller list because it was in the self-help section," Pratt tells the mag. "This one is going to be totally different. I'm not holding anything back."

As expected, Montag isn't jumping for joy over the book news.

"This is exactly why I left him," she told TMZ. "Right now I'm looking into my legal options."

Montag filed for divorce in July, less than two months after she sought a legal separation from Pratt. The twosome tied the knot in April 2009 at the Westminster Presbyterian Church in Pasadena, Calif.