Singer and actress Olivia ... Newton-John on a cover that teased a tell-all with the Bee Gees heartthrob. Her mega-hit "Physical" was the inspo for this on-trend early '80s cover shoot.

At the home they shared in Santa Ynez, California, he keeps a memory table with his wife's favorite photos and mementos. "There's no replacing her," he says. Olivia Newton-John's Family Reveal ...