After dating for over a year Actor Mel Gibson and Oksana Grigorieva have split, according to People reports."They just drifted apart," says a close friend of the couple who are pictured above last month. "They’re both working hard on their careers and trying to raise a sweet baby together. They're still friends and they'll both raise Lucia together."The couple have one daughter Lucia 5 months old. Mel Gibson already has six children 5 sons, and 1 daughter and Oksana has one son Alexander with her ex boyfriend Actor Timothy Dalton.