Furious GEORGE CLOONEY cursed out his "Ides of March" co-star RYAN GOSLING for blowing off the Golden Globes, sources tell The ENQUIRER.

"Ryan Gosling is a (bleep)!" the 50-year-old heartthrob fumed to a group of showbiz execs in the lobby of the Beverly Hilton hotel following the Jan. 15 awards show. "The (bleep) stood me up!"

George took home the Best Actor award for his role in "The Descendants," beating out Ryan's portrayal of Stephen Meyers in "The Ides of March."

But George, who directed "Ides," was more interested in generating publicity for that film in preparation for this month's Academy Awards than his own win.

And Ryan's absence didn't help. Earlier, while cameras were rolling during the awards, George laughed off the no-show, noting that Ryan had sent him an e-mail explaining that he'd suddenly decided to jet off to Bangkok, Thailand, to begin filming "Only God Forgives."

"He's in Thailand or something, and you know what you do in Thailand…" George quipped in obvious reference to the country's sex tourism industry. But the actor's jovial manner disappeared as soon as he was out of the spotlight. "George called him every name in the book!" an insider revealed.

And he wasn't the only person disappointed by Ryan's decision to skip the Golden Globes. Eager fans as well as photographers had hoped to get a glimpse of the hunky 31-year-old walking the red carpet with his sexy new girlfriend EVA MENDES. The source added: "Ryan definitely let a lot of people down that night."