Article continues below advertisementJohn Stamos is giving his full support to longtime friend Lori Loughlin amid news she separated from Mossimo Giannulli.While appearing on the Monday, October 20, episode of the "Good Guys" podcast, the actor revealed he's "heartbroken" for Loughlin, expressing, "For 40 years I've known her. And you can see through people after a few years - this woman's a saint.