John Stamos Slams Lori Loughlin’s “Narcissist” Ex Mossimo Giannulli, Saying “Whatever He Did to Her, It Busted Her Up to the Core”
John Stamos is speaking out with rare emotion about his longtime friend and former Full House co-star, Lori Loughlin. In a candid conversation on the latest episode of his Good Guys podcast, the actor didn’t hold back when addressing Loughlin’s painful split from her husband, Mossimo Giannulli. His words were raw, protective, and deeply personal — showing just how much he still cares for his old friend after everything she’s been through.
Stamos called Giannulli “a terrible narcissist” and admitted he has no interest in ever speaking to him again. The actor said that whatever Giannulli did to Loughlin “busted her up to the core,” describing how much the actress has struggled behind the scenes to rebuild her life since their separation. For fans who’ve followed their friendship since the golden days of Full House, his comments came as a reminder of the deep loyalty that has bonded the cast for decades.
Loughlin and Giannulli were once seen as one of Hollywood’s most glamorous couples, a power duo whose seemingly perfect life came crashing down after the 2019 college admissions scandal. The pair served short prison sentences and retreated from the public eye. While Loughlin has made a slow return to work and has been rebuilding her reputation, reports of tension between her and Giannulli began circulating months ago. When news of their separation became official, it was Stamos who was one of the first to step in — both publicly and privately — to show support.
On his podcast, Stamos spoke with the same mix of candor and compassion that fans have come to expect from him. “Lori’s been through hell,” he said, pausing before adding, “and she’s still one of the kindest, most genuine souls I know. You see people fall apart, but she’s stood back up.” He didn’t elaborate on the details of her marriage or the specific issues that led to their separation, but his tone made it clear that he believes Giannulli’s behavior played a major role in her pain.
Stamos’s comments immediately caught attention online, sparking a wave of reactions from fans and entertainment insiders. Many praised him for standing by Loughlin during such a difficult time, while others noted the emotional honesty of his words. It’s rare in Hollywood, they said, to see friendships endure so long and stay so loyal through scandal and heartbreak. For Stamos, however, it’s clear that loyalty comes naturally. His history with Loughlin stretches back nearly four decades — through Full House, countless public appearances, and years of shared milestones.
“She deserves peace,” Stamos added near the end of the episode. “She deserves love that doesn’t hurt.” It was a quiet but powerful statement that echoed across social media, where clips of his remarks began trending within hours. Fans shared messages of support for Loughlin, praising her resilience and calling Stamos a “true friend.”
While Loughlin herself has not publicly commented on Stamos’s remarks, those close to her say she’s focusing on healing and looking forward to the next chapter of her life. And with friends like John Stamos by her side, it’s clear she won’t be facing it alone.
