Asked how she makes her marriage work, Catherine Zeta-Jones has been known to respond: "We don't 'work' at it. We just love each other very much".
But it would seem the truth about her successful union with Michael Douglas is a bit more complicated than that.
The secret of their happiness appears to be compromise.
A few weeks ago, the Welsh beauty attended the Super Bowl with her husband, when other spouses, however loyal, might have found a convenient excuse to duck out of America's premier sporting fixture.
Catherine was there looking proud as he proved he's recovered from his throat cancer by voicing a video that appeared at the game.
And on Wednesday Michael, 66, readily returned the favour going as her plus one to New York fashion week, at which the couple sat front row for Michael Kors.
The actor, wearing a smart in a pewter cashmere sweater and natty grey trousers, looked the picture of health.
The show marked the thirtieth anniversary of the designer's main line and the sharp, monochrome tailoring embodied by Michael Kors' signature of "sporty decadence".
They were joined in the front row by Vogue editor Anna Wintour and Bette Midler at the star-studded presentation.
Meanwhile, boho queen Anna Sui showcased an array of patterns-outfits featuring folkloric florals woodland themes and Oscar de la Renta matched thick fur with traditional beading to create an exotic but grown-up luxe look.