John Stamos Addresses Addiction, Lori Loughlin & 'Full House' Confessions in New Memoir (Exclusive)

John Stamos chats with ET about the confessions he made in his new memoir, 'If You Would Have Told Me,' out now. The actor opens up about what it was like writing about his experiences with addiction, the death of his friend, Bob Saget, starring in 'Full House,' a missed romance opportunity with Heather Locklear, his friendship with Lori Loughlin and more.