Hugh Dancy, you saucy devil!


The handsome British actor is "the other man" in the Claire Danes/Billy Crudup breakup - although some might be surprised he hooked up with her and not him.


An eyewitness says Danes and Dancy got together Nov. 2, a month before the split with Billy.


According to the source, they shared a bed "with the door two feet ajar, and everybody listening" in his suite at the swanky hotel where the cast was staying while filming "Evening" in Newport, R.I.


But horny Hugh didn't limit his attention to the ladies.


"The cast was pretty much drunk every night," says the snitch. "Hugh also made out with [screenwriter] Michael Cunningham in the lobby."


Plus, he was seen snogging the gay hotel manager, who lost his job.


A hotel rep confirmed the manager had left, but insisted it was not over that incident. Dancy's manager and Danes' publicist declined to comment.