Hart, 40, took to Instagram to share a special message about his longtime love with his fans, reported E! online.
"Happy anniversary to my MUCH better half, 10 years is a pretty amazing milestone for 2 misfits like us," he wrote alongside a black-and-white photo of the two with their daughter, Willow.
I'm proud of us baby!!! Thank you for being an amazing wife, mother, and friend. I love you," he added.