John Stamos' wife, Caitlin McHugh, is sharing a message of support for Dave Coulier amid his cancer battle. "While I do love how you use your experiences to help others, I sure hope God/the universe gives you a well-deserved break from it in the new year. ❤️❤️," McHugh, 39, wrote in the comments section of Today's Instagram post on Tuesday, December 2.