There may be trouble in paradise for "X Factor" judge Nicole Scherzinger and her boyfriend, Lewis Hamilton.

According to Perez Hilton, Scherzinger decided to stay in a hotel in London while taping the "X Factor" show, instead of staying with the Formula 1 racer at his mansion, which is located minutesfrom the studio.  

A source told the celebrity gossip site:

"We were shocked last week when Nicole told us she intended she check in to an expensive hotel. When the live shows started everyone expected her to move into Lewis’s beautiful, newly-built mansion. It’s only a 35-minute drive from the studios in Wembley.

"The Formula 1 season ends in November, so Lewis will be in the country and Nicole would not have been there on her own. It’s a beautiful hotel, but in traffic it would probably be a longer journey to the studios. Surely if everything in the ­relationship was as rosy as they are saying it is, she would just stay with Lewis?"

Could this be the result of Scherzinger allegedly kissing Chris Brown at a Hollywood nightclub last month?

Though her rep quickly denied the allegations, one source who spotted the pair at nightspot Supperclub told X17 "they were dancing close for a while and being all touchy-feely and finally Chris leaned into her. She put her head on his shoulder and they started kissing!

I couldn't believe Chris was being so obvious about it!"

(View pictures here.)

If Scherzinger and Hamilton break up, it won’t be the first time. They split briefly in 2011 before getting back together.