Sharon Osbourne says the rumours surrounding her split to Ozzy Osbourne are "true" and she's left the rocker after 33 years of marriage.

On her talk show The View, Osbourne addressed reports that the pair had separated for the first time, saying she left him because "I'm 63 years of age, and I can't keep living like this.

Rumours surfaced on Monday that the couple, who have been married for 33 years and had their relationship documented through several seasons of hit reality show The Osbournes, had separated over rumours he'd had an affair with a hairdresser.

Osbourne, 63, said she and Ozzy, 67,were still on speaking terms, but she had moved out of their Hollywood home.

"It's right for me because I honestly at this point, today, have no idea what I'm going to be doing for the rest of my life. I don't know where I'm going, who I'm going with, and I just need time to think ... "and really think about myself, about what do I really want for the rest of my life?

"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 ... And at this point, honestly ... I have no idea."

Ozzy, the front man for rockers Black Sabbath who were recently on tour in New Zealand, previously told E! News the separation didn't involve a relapse into drugs or alcohol.

"I have been sober for three and a quarter years. I have not touched drugs or alcohol in that time. Any reports that I am not sober are completely inaccurate."

It was previously claimed that Sharon went "ballistic" when she found "proof" Ozzy, 67, was allegedly cheating on him.

A source said: "Sharon went ballistic with Ozzy and accused him of having the affair. She said she had suspected something had been going on for some time and now had proof.

"People are wondering whether Sharon went through Ozzy's phone before accusing him. She has done that before but in the past she was checking if he'd been using drugs."