The pair were spotted dancing together at a post-Golden Globe Awards party at Teddy's nightclub inside Hollywood's Roosevelt Hotel on Monday night.
The representative says, "Jack and Kate have known each other for a while.
There have been rumors of a romance for quite a while. I asked him about these about a year ago and he was very coy. He left me with the idea he wouldn't be against the idea."
Moss was recently linked to 20-year-old former English public schoolboy James Burke after spending the New Year with him in Aspen, Colorado. Before that she dated rocker Pete Doherty.
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