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It's official that Mel Gibson's Russian girlfriend Oksana Grigorieva is currently pregnant. The 53-year-old actor spoke up about the matter during "The Tonight Show with Jay Leno", which was aired on Monday, May 25.

"I guess I'm 'Octo-Mel,'" he said. Asked about his plan to marry Oksana, the father of seven children simply answered, "Why would you get married twice?"

Still in the same interview, Gibson talked about his split from wife of more than 28 years Robyn Moore, who filed for a divorce six weeks ago. "My wife and I, our marriage ended three years ago and we've been separated ever since then. These things happen. It's unfortunate, it's sad, but you know she is an admirable woman -- we still got kids together, we're friends," he recalled.

"Look," he continued. "When it's all said and done, I did a pretty good hatchet job on my marriage myself. I'm to blame. If you're inclined to judge, put it here."

Mel Gibson and Oksana Grigorieva, who is signed to his recording label Icon, began dating less than a year ago. They made their first public appearance as a couple at "X-Men Origins: Wolverine" premiere at the Grauman's Chinese Theater in Hollywood, California on April 28.