Recently single Britney Spears doesn't seem too keen on staying single. Britney and Isaac Cohen spent the night together in the Hugh Hefner suite of a Las Vegas hotel on Saturday, it has been reported by UTC news.

The pair stayed in the Fantasy Tower wing of The Palms hotel, in the $40,000-a-night, two-storey Hugh Hefner Sky Villa, which has an 8ft rotating bed, a Jacuzzi, full bar and a glass elevator.

"They seem very happy together," a source said. Britney Spears and model-and-actor Isaac Cohen, both 25, were seen dancing and smoking cigarettes at gay nightclub 8 1/2 for about an hour before returning to their luxury suite.

Staff at The Palms refused to comment.

Last Saturday (06.01.07), the 'Toxic' singer and Isaac were seen together on a speedboat off the coast of Marina del Rey, in California, and they met up the next night at the Whiskey Blue bar of Westwood's W Hotel.

Britney Spears filed for divorce from Kevin Federline last November and has since been seen partying hard with party animal Paris Hilton.

Britney's wayward behavior lately cost her fans and a couple of fan sites were shut down following publication of pictures of her showing up in nightclubs wearing scanty clothes without underwear. Legal experts and media hawks feel her latest antics might affect her battle with Federline for the custody of her two sons, one-year-old Sean Preston and newborn Jayden James.