"Dancing with the Stars" professional dancer Kym Johnson are engaged after dating for 10 months. "I still can't believe that a year after walking into a dance studio of all places, my life has changed this much," Herjavec told People magazine Sunday. "Kym is an incredible woman and I'm just so excited for what the future brings for us." "To celebrate tonight with our family and friends, and my mom who flew in from Australia, wow -- I'm just overwhelmed and so happy," added Johnson. "He's a wonderful man and I'm so lucky." Johnson, 39, and the "Shark Tank" billionaire, 53, were dance partners on Season 20 of "Dancing with the Stars."