Keira Knightley on Upcoming 10-Year Wedding Anniversary with Husband James Righton: 'It's a Miracle'

Keira Knightley (L) and James Righton attend an after party celebrating The Moet British Independent Film Awards 2014 at Old Billingsgate Market on December 7, 2014 in London, England
Keira Knightley (L) and James Righton attend an after party celebrating The Moet British Independent Film Awards 2014 at Old Billingsgate Market on December 7, 2014 in London, England
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Keira Knightley is celebrating the rollercoaster of marriage with a major milestone.

The Oscar nominee, 37, joked "it's a miracle" that she's about to celebrate her 10th wedding anniversary with husband James Righton as she and Boston Strangler costar Carrie Coon appeared on The Drew Barrymore Show this week.

"Yeah, we made it. We made it," said Knightley. "We have two children, and we've made it a decade. It's a miracle."

She and Righton, 39, a British musician, began dating in 2011, and they tied the knot two years later in Mazan, France, on May 4, 2013. The couple shares daughters Edie, 7, and Delilah, 3.

"I met my husband in a very drunken way," Knightley recalled. "We were very drunk for our first few dates, so we don't really remember them."

RELATED: Why Keira Knightley and Carrie Coon Were Not 'Allowed' to Do Boston Accents in Boston Strangler

After Barrymore, 48, brought up their mutual love of rollercoasters, Knightley said that for their "first proper date," Righton "sweetly decided to take me to a theme park" outside of London with "amazing rollercoasters."

"But he didn't tell me that he's completely terrified — like, completely," she recounted. "So he was so white and shaking and sweating, and we actually have a picture from our first date on the massive rollercoaster."

RELATED: Keira Knightley and James Righton's Relationship Timeline

"And I'm just like — the happiness, like, 'This is the most amazing thing!' and he literally looks like he's going to die. And he's looked like that ever since," joked Knightley.

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Knightley previously told PEOPLE about their daughters and how she encourages their rebellious spirit, as she knows they "will never listen to" her advice.

"I really hope that they don't listen to me when they're teenagers, and they pile [makeup] on their faces, and they do completely extraordinary punk-like things," said Knightley last April. "Because that's the point of being a teenager."

Boston Strangler is now streaming on Hulu.