Tom Cruise has admitted he "didn't expect" Katie Holmes to file for divorce last June.

The Oblivion star - who shares six-year-old daughter Suri with his 34-year-old ex-wife - was completely shocked when the actress decided to end their marriage after six years together and found it a challenge to move on with his life.

"I didn't expect it. Life is a tragicomedy. You need to have a sense of humor. I had an unbelievable amount of time to think about it. Life is a challenge," he said recently.

The three-times divorced actor added that he didn't expect to be single at his age but said that it has helped him to put things in perspective. "To be 50 and to have experiences and to think, you have a grip on everything, and then it hits you: This is it, what life can do to you,'" he explained.