Bobby Brown and Whitney Houston in 2001. (LAURA RAUCH/AP)

The autopsy conducted on Whitney Houston confirmed the sad truth that the singer, who promised her mentor Clive Davis a comeback the night before her death in February, was once again using cocaine and other drugs.

Houston’s ex-husband Bobby Brown has been blamed by some of the late singer’s fans — and reportedly her family — for introducing her to the dangerous substances and setting off a destructive, downward spiral.

In a two-part interview on the “Today” show, set to air on Wednesday and Thursday, Brown told Matt Lauer he did not introduce his ex-wife to drugs and is not to blame for Houston’s death.

“It makes me feel terrible,” Brown told Lauer about being blamed for Houston’s death, according to an early look at the interview released by “Today.” “But you know, I know differently. I think if anyone ever knew us, if anybody ever spent time around us instead of time lookin' through the bubble, they would know how we felt about each other. They would know how happy we were together.”

Houston was found unresponsive in a bathtub at the Beverly Hilton on the eve of the Grammy Awards. The L.A. Coroner’s office said the diva died of “drowning and effects of atherosclerotic heart disease and cocaine use.”

Brown, who recently pleaded no contest to a DUI charge and was sentenced to three years probation, denied to Lauer that he introduced drugs to Houston. “I smoked weed, I drank the beer, but no, I wasn’t the one that got Whitney on drugs at all,” he said. “It’s just unexplainable how one could, you know, [say that I] got her addicted to drugs. I’m not the reason she’s gone.”

View Photo Gallery: Whitney Houston, who reigned as pop music’s queen until her majestic voice and regal image were tainted by drug use, erratic behavior and a tumultuous marriage to singer Bobby Brown, has died.