has become a "carer" for Catherine Zeta-Jones, just months after being cleared of throat cancer.
The 'Wall Street: Money Never Sleeps' star has been "treating" his Welsh wife - who recently stayed in the Silver Hill hospital in Connecticut to deal with bipolar II disorder - to spa
days and special treatment, as well as offering lots of emotional support to help her deal with her medical issues.
A source told The Sun newspaper: "Catherine has been battling these problems for some time but held herself together for Michael.
"But after he was told his tumour had gone, it was time to deal with her issues. Just months after needing to be looked after around the clock, Michael became her carer.
"He has been treating Catherine to romantic dinners, spa treatments and lots of emotional support."
An unnamed relative of the 41-year-old actress - who has children Dylan, 10 and Carys, seven, with Michael - has claimed her family are "very concerned" about her current situation and they have been "inundated" with people in her hometown of Swansea asking how she is.
She added: "The whole family is very concerned about her. We have been inundated with calls from friends and relatives who are wondering what is happening.
"Strangers are stopping me in the street and asking, 'How is Catherine?' Everyone in Swansea seems worried about her welfare."
The 'Chicago' star is thought to have visited parents Patricia and David in south Wales recently and have now flown from the UK to the US to help her and be "supportive" to Michael.
A source told the Daily Express newspaper: "Catherine and her parents are very close. They've gone to help her at this time just as you would expect. They have been spending a lot of time with Catherine while Michael has been ill but now she's the one that needs the support."