Diane Keaton regrets for not tying the knot

London Diane Keaton, 66, regrets for not marrying as she admitted it would have been best for her adopted children to have a father figure, reported Contactmusic. The Annie Hall actress dated Woody Allen, Warren Beatty and Al Pacino but didnt marry any of them. She adopted daughter Dexter in 1996 and son Duke in 2001. The Oscar-winning actress said, "As a parent I provide all I can, but I think in the best possible scenario you need to have a man."