Dax Shepard has FINALLY broken his silence on Kristen Bell's controversial anniversary post! As you'll recall, back in October, the Frozen star took to Instagram to mark their 12th wedding anniversary. But in her caption, she included a very head-scratching joke from Dax, writing: "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.