Gwyneth Paltrow admits that her marriage isn't always exactly "iron"-clad.

The Iron Man star was asked what the hardest part of her marriage to Coldplay frontman Chris Martin is. "Probably our artistic temperaments together," she tells InStyle UK. "Artists are sensitive  there are ups and downs, mood-wise. Musicians need a certain gravitas and focus in order to write."

Gwynnie continues, "The temperament that goes with someone who is creative can be challenging." 

Still, it sounds like the two of them are still going strong. In fact, Gwyneth wouldn't mind having even more kids in addition to the two they already have.

"My brain says, 'Oh, I think I'm done, the kids are big now, and I don't want to go back to changing diapers.' But a part of me would love to have another," she says.

Then she adds, "Of course, I'm old now!"

Old? Hardly! Plus, she somehow continues to keep looking better than ever. Not fair.

Source: InStyle UK via Us Weekly

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