Los Angeles (AFP) - Reality television star Sharon Osbourne has confirmed her split with heavy metal icon Ozzy Osbourne and said she planned a long think about her future.

Sharon Osbourne, who was also manager to her husband and other rockers, returned on Tuesday to her spot on the daytime show The Talk and was asked about reports she booted Ozzy from their Los Angeles-area mansion.

"No, it's true," she said with a deadpan expression. She said that Ozzy had since returned to their former home, and that she in turn left.

One of the most enduring couples in the rock world, the Osbournes have been married for more than 33 years.

Sharon Osbourne, 63, initially met Ozzy when her father in their native England was managing Black Sabbath, one of the defining heavy metal bands.

Sharon Osbourne said she had turned off the television in recent days and was beginning to think about her future.

"I honestly at this point today have no idea what I'm going to be doing with the rest of my life. I don't know where I'm going, who I'm going with," she said.

"Because this is, like, getting to the last chapter of this book and I really want to think about it very carefully, about where I want to go," she said.

The reasons for the split were unclear but Ozzy, 67, has denied that he had relapsed into his well-publicised past alcohol and drug problems.

But in a hint that the split was linked to an affair, she took the stage of The Talk conspicuously holding a glass of lemonade.

Beyonce's latest album, Lemonade, hints at infidelity by her husband, rap mogul Jay Z.

Sharon Osbourne was instrumental in managing Ozzy's career, including recruiting songwriters and guitarists who kept him in the forefront of heavy metal as a solo artist.

She went on to manage other artists and became a public figure in the early 2000s when her life with Ozzy and two of their three children was turned into an MTV reality show, The Osbournes.