In a recent interview, Keith Urban opened up about his marriage to Nicole and shared the secrets as to why he thinks that it works so well.
"It's tending to the garden. If you don't do the work, the garden starts to grow over, and then you complain that the garden is not very interesting and you look for another garden. I maintain this garden," Urban told Women's Day, via The Daily Mail.
He called Kidman his "best friend" and said no one else on the planet "knows me as well as she does." He said it takes work to maintain their relationship, but it is not too hard because the two "just love being together."