The "Mirrors" singer's wife, Jessica Biel, recently revealed that Timberlake's fun-loving personality is one of the reasons their marriage works.
"We have similar values; we believe in loyalty, honesty," Biel told Marie Claire. "We like to have fun. We like a lot of the same things. Also, in the business, we're all very career-oriented, and you have to be a little selfish. I understand that about my peers -- about being focused and driven -- and if you can find that and someone who shares the same values as you, it’s like: Score!"