McLaren's former Formula One champion Lewis Hamilton has confirmed that he and singer girlfriend Nicole Scherzinger have split due to hectic and vastly different work schedules, but he says they remain friends
The 26-year-old Hamilton had been dating the American since March last year when they reunited after a previous split.
Scherzinger, former lead singer with the Pussycat Dolls, has achieved fresh celebrity with her role on the judging panel of the U.S. television show "The X Factor".
Hamilton qualified on pole in South Korea two weeks ago, and finished second behind Red Bull's champion Sebastian Vettel, but barely smiled during the weekend.
Team boss Martin Whitmarsh alluded to a personal problem when he told reporters at the time that "he's had a lot of speculation about him and his private life, which he doesn't want, and doesn't welcome, I'm sure".
Hamilton says he feels positive about the first Indian Grand Prix, the 17th round of a 19-race championship already wrapped up by Vettel.
