London, Aug 25 : British Formula 1 ace Lewis Hamilton has sparked speculation he's taking his relationship with Pussycat Dolls star Nicole Scherzinger to the next level by moving in with her.

The singer has been dating the racer since they met in November (07) - and now the couple is reportedly set to buy a London home together.

"Lewis and Nicole are getting pretty serious. They're almost living in each other's pockets as it is, but we're hearing that they may be about to buy a place together," News of the World quoted a source, as saying.

"It would only be a part-time base because Lewis is based in Switzerland," the source added

The source added: "The fact they are planning to get a place shows how serious they've become."

ANI