Now Gwyn has opened up about her ‘hard’ marriage.
Speaking to a UK magazine, the 40-year-old revealed:
“It’s hard being married. You go through great times, you go through terrible times. We’re the same as any couple.
“I asked my dad once, ‘How did you and Mum stay married for 33 years?’ And he said, ‘Well, we never wanted to get divorced at the same time’. And I think that’s what happens.
“When two people throw in the towel at the same time, then you break up, but if one person’s saying, “come on, we can do this”, you carry on.”
'You go through great times, you go through terrible times. We're the same as any couple'
Talking about her husband of ten years Coldplay singer Chris Martin, 36, she said:
“We laugh, we’re good friends, we like to do the same stuff.
“I’m a very grounded, homey person and Chris is a very mad scientist, genius songwriter.
“So I never say ‘Where are you? You should be home by now’. I never place demands on him because I think he’s a really talented man and he’s putting something good into the world.”
'Chris is a very mad scientist, genius songwriter. I never place demands on him'
The Iron Man star, who has two children with Chris – Apple, 8 and Moses, 6,- admitted that although she has gone through hard times, it has made her a stronger person.
“I've had a great deal of suffering in my life. I've lost people - my first cousin, my best friend in a car accident. I've had a lot of things happen to me that I don't talk about in the press.
“I've had a lot of really heartbreaking, difficult things. But all of those things have strengthened my resolve to make the best of my life.”