George Clooney has admitted that he sometimes drinks "too much".

The Oscar winning actor made the revelation to The Hollywood Reporter, but revealed he hasn't touched a drop of alcohol since the start of the year.

The 50-year-old has become adept at realising when he needs to put the brakes on his alcohol intake.

"I drink at times too much," he explained. "I do enjoy drinking, and there have been times in my life when it's crossed the line from being fun to having to drink late at night for absolutely no reason.

"So what I do is, I stop. I haven't had a drink since New Year's Eve."

George also opened up about his friendship with Brad Pitt who he bonded with during their work on the Ocean's Eleven franchise. But he says that they are not as close as people believe.

"Brad is one of the great guys," he said about his fellow Hollywood heartthrob. "We're good friends, but it's different from what people think, meaning we don't spend a lot of time together.

"He has been to my home in Como; we motorcycle together. But until recently, I hadn't seen Brad in a year."

Despite having all the wealth and fame imaginable, George also confided that he sometimes finds it hard to sleep even though he is in bed by 10pm most nights.

"Turning off the television causes me to think, and once I start that vision roaring, I have a very tough time getting to sleep," he says candidly.

"I'm able to numb out. Without question, I wake up every night five times."

But he said it was during one of his sleepless nights that he wrote some of the most memorable dialogue for his movie Ides of March.

George is known for being a bachelor and has spoken about never wanting to marry again following his divorce from ex-wife Talia Balsam.

"I don't even think about it really," he said about walking up the aisle again but apparently has not 100 per cent ruled it out either.

George is currently dating former professional wrestler Stacy Keibler.