Said Elatab / Splash News 1 / 16
Said Elatab / Splash News 1 / 16

George Clooney has ruled out ever dating Sandra Bullock because she once went out with one of his pals.

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The Hollywood superstars have been friends for 20 years and recently went through a tough time together as they filmed harrowing space disaster movie "Gravity."

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But despite both of them being single, Clooney insists the fact Bullock once hooked up with one of his friends takes her out of the running as a potential girlfriend.

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He tells E! News, "She was dating one of my best friends. There's a certain bro code, you know what I mean? I've known her a long, long time."