She was there by his side every step of the way while he was battling throat cancer.
Now the tables have been turned for Michael Douglas, who has become Catherine Zeta-Jones' rock while she deals with her mental health issues.
The Wall Street star has been lavishing attention on his wife, who has undergone treatment for bi-polar disorder.
A friend tells The Sun newspaper: "Just months after needing to be looked after round the clock, Michael became the carer.
"He has been treating Catherine to romantic dinners, spa treatments and lots of emotional support."
Photo: © Rex Freatures