Charlize Theron once declared she wouldn't marry until gay marriage was legalized in the U.S., but now she says she's swearing off marriage altogether.

In a new interview on CNN's 'Piers Morgan Tonight,' the Oscar-winning actress discussed her stance on gay marriage and revealed that she doesn't see marriage in her future.

"I'll be the first to say, here on your show, marriage -- before I felt this way about [marriage equality] -- was never something that was important to me. I don't know the exact reason for that," Theron said.

"Some would say because I came from a very troubled marriage," she said. "My parents did not have a good marriage, but I don't think it's that."