Kristen Bell knows how to keep her marriage thriving. Related: Jessica Simpson Is 'Into Younger Men' After Eric Johnson Split! The Forgetting Sarah Marshall star and her hubby Dax Shepard celebrated 12 years of marriage on Friday! Can you believe that?! On Instagram, she shared a very on-brand post to mark the milestone. Alongside a photo of Dax hugging one of their daughters, she hilariously wrote: "Happy 12th wedding anniversary to the man who once said to me: 'I would never kill you. A lot of men have killed their wives at a certain point.