Demi Moore opened up about how tough it's been to witness ex-husband Bruce Willis' dementia diagnosis progress. "It's difficult," the actress, 62, recalled on a recent podcast appearance. "It's hard to see somebody who was so vibrant and strong and so directed sift into these other parts of themselves." Moore was previously married to Willis, now 70, from 1987 to 2000. The exes share three daughters: Rumer, 37, Scout, 34, and Tallulah, 31. While Willis moved on with wife Emma Heming Willis in 2009, Moore and the now-retired action star have remained amicable.