Tom Cruise might be going out with Katie Holmes but Nicole Kidman is reportedly dating a new mystery man, if rumours are to be believed.

She was recently seen with him at Los Angeles' Beverly Hills Hotel. "He's a well-muscled, handsome guy who said his name was Mike. They went jogging every morning. Then you'd see them in the coffee shop and around the pool," New York Daily News quoted an insider as saying.

"Do you go out with your trainer or bodyguard to dinner every night? They were in the Polo Lounge one night after another. They looked very intimate," the insider added.