Article continues below advertisementJohn Stamos shared a positive update on his Full House costar Dave Coulier amid his cancer battle. "Dave and I talk a lot," Stamos shared with a media outlet. "You know, we lost Bob [Saget], and I couldn't bear losing Dave, so I've been with him a lot during this cancer journey of his."Article continues below advertisementJohn Stamos Claims Dave Coulier Is '100 Percent Back' to His Old SelfSource: @dcoulier/InstagramJohn Stamos said it's 'great to see that the treatments work' when speaking about Dave Coulier's cancer battle.