John Stamos is mourning the loss of a dear friend ... announcing the heartbreaking news on social media Monday.

“feels like losing a piece of myself, like chapters of my story are missing now. He knew every secret, every joy, every heartbreak.” Related: John Stamos Reteams with Childhood Bandmates for ...

Going to Get Through This' John Stamos Mourns Best Friend of 50 Years After His 'Sudden' Death: 'Feels Like Losing a Piece of Myself' John Stamos Vows to Stand with Dave Coulier 'Through It All ...

EXCLUSIVE: While Super Bowl LIX is setting new records for national ad rates, John ... TV and CBS. “I always knew Zeam was important, but during the L.A. fires, it became almost life-saving ...