Category: Nicole Richie

They’ve been together for more than three years and have two children. Now, Nicole Richie and Joel Madden are planning to make it official.

Richie said Monday night during a taping of the Late Show with David Letterman that the couple are engaged to be married, a source tells PEOPLE.

After the show, Richie headed to the New York restaurant Abe & Arthurs – without her fiancé – for dinner. “She was glowing,” says a source. “She was telling her table how happy she was.”

Richie, 28, and Madden, 30, began dating in December 2006 and have daughter Harlow, 2, and son Sparrow, 5 months.

And while they’ve been living as a close-knit family, as recently as October Richie dashed engagement rumors. “One day I would love to get married,” she said. “It’s not something we’re talking about right now. If my kids ask me to get married, I’d get married.

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