"I think she probably first fell in love with me when I sang "You and I" from the musical Chess," Hugh, 48, tells Closer of the song that continues to be a fun shared memory.
"Deb will still ask me to sing it for her at home, although she’s usually a bit tipsy," he quips.
He and Deborra-Lee, 61, first bonded while starring together on the 1995 Australian TV miniseries Correlli. "There was something that clicked between us right away," the Logan actor —who wasn’t even looking to settle down at the time — tells Closer.
"It was the feeling you get when you sense this connection that tells you this is the kind of woman you want in your life."
For more on Hugh and Deb, and all your favorite celebrity couples, pick up the latest issue of Closer Weekly on stands now!
For more exclusive news from Closer Weekly, be sure to sign up for our newsletter!
Click through the gallery below to see celebrity couples who've been together the longest!