George Clooney's secret was actually outed by Julia Roberts. Clive Owen was featured in the March 2009 issue of Esquire. The article mentions that Julia spoke candidly about the relationship between George and Clive:
"George Clooney is obsessed with Clive . . . because he's English, because his successes have stood on the shoulders of his talents alone, because he hasn't just been carried away by popular culture."
Clive mentioned in an interview that he reciprocates:
"Well, I've got a bit of a crush on George Clooney . . . I think he's great."