October 26, 2016 07:51 PM

Keith Urban was all smiles as he celebrated his 49th birthday with the love of his life… and some cake.

The Australian country music singer took to Twitter on Wednesday, posting a photo of his wife, Oscar-winning actress Nicole Kidman, and a cake with the words “Happy Birthday Big Cat Daddy” written in white icing.

Source: Keith Urban/Twitter
Source: Keith Urban/Twitter

“Best birthday EVER!!! Love u baby xxxxxxx K,” Urban wrote.

The two lovebirds have been married since 2006 and share two daughters, Sunday Rose and Faith Margaret. Kidman has two older children, Isabella Jane and Connor Anthony, from her previous marriage to Tom Cruise.

Urban told HITS magazine in July that his marriage to the actress “informs everything.”

Source: Keith Urban/Twitter
Source: Keith Urban/Twitter

“Nic is so unbelievably open; she doesn’t keep things in or bottle them up. She’s really a great communicator,” he said. “Because of her, if I open up, every day, I’m listening and growing and learning. If I’m a better man, it’s because of her.”

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Urban told PEOPLE in May that the couple were “pretty goofy” when together.

“She’s my best friend. I’ve never had anybody on the planet that knows me as well as she does,” he said of his wife. “I would love to have been worthy of somebody like Nic, but I was a long way from it when we met. Somehow we just found there was love there, real love. I literally just feel like the luckiest guy on the planet.”

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