Whitney Houston's mom Cissy addresses lesbian rumors in new book

Nearly a year after Whitney Houston’s death, her 79-year-old mother, Cissy Houston is revealing intimate details of the pop icon’s life in the new book Remembering Whitney.

The book is described as “honest and heartbreaking, a mother’s story of tears joy, and her greatest love of all – her daughter, Whitney.”

From Whitney’s earliest days singing in the church choir to her rapid ascent to the pinnacles of music stardom, from her string of number one hits to her topping the Hollywood box office, Cissy recounts her daughter’s journey to becoming one of the most popular and successful artists of all time.

In new excerpts from the book provided to People magazine, Cissy writes candidly about her daughter’s severe drug problem that ultimately led to her demise.

“She started partying and she didn’t really know how to stop,” says Cissy. “I used to wonder what she was doing at night, where she was.”

Cissy also said that that she doesn’t blame Bobby Brown for her Whitney’s downward spiral.  “I blame him for the way he treated her,” she says, “but I don’t blame him for her drug problems.” Still, she adds: “He was no help to her at all.”

In her book Cissy opens up for the first time rumors of Whitney Houston having an alleged lesbian relationship with her former assistant/creative director Robyn Crawford.

“I just didn’t want her with my daughter,” she says. “I know nothing about a romantic relationship. That’s what everybody said but they didn’t know either.”

The former gospel singer admitted that to this day she is still tormented by her daughter’s untimely death. “I’m angry she died alone, in those conditions,” she says. “I’m still mad about that.”

In July 2012, Gospel legend BeBe Winans, who befriended a young Whitney early in his career, revealed what he believed to be some of the highs and lows of Whitney Houston’s life in a book he wrote entitled The Whitney I Knew.

During an interview with theGrio, Winan’s revealed that Cissy encouraged him to write his own book about Whitney’s life. “I was encouraged by Cissy. One of the things I would not have done, is write this book if I did not have the blessings of the family,” Winans said.

Remembering Whitney hits store January 29th, one day after Cissy’s exclusive sit-down interview with Oprah Winfrey for Oprah’s Next Chapter on OWN.

Follow Chris Witherspoon on Twitter at @WitherspoonC