When it comes to Bruce Willis ’ health battle, many might wonder how his decline began compared to how his condition is now.

To answer that question, before he was diagnosed with frontotemporal dementia, the iconic actor’s wife Emma Heming Willis began noticing “alarming” warning signs – including changes to his once “warm” personality, losing interest in things he usually loved and skipping out on family outings.

“For someone who is very talkative and very engaged, he was just a little more quiet,” Heming Willis told Diane Sawyer in a preview clip of the ABC special “Emma & Bruce Willis: The Unexpected Journey,” which aired Tuesday on " Good Morning America ." “When the family would get together, he would kind of just melt a little bit.”

“It felt a little removed, very cold, not li

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