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Nick Lachey and Vanessa Minnillo are Engaged

Vanessa Minnillo and Nick Lachey pose together in a horse-drawn carriage during a promotional event for Nivea in New York's Central Park Tuesday, Feb. 9, 2010.
AP Photo/Jason DeCrow
Vanessa Minnillo and Nick Lachey pose together in a horse-drawn carriage during a promotional event for Nivea in New York's Central Park on Feb. 9, 2010.
AP Photo/Jason DeCrow

NEW YORK (CBS) Nick Lachey and Vanessa Minnillo are getting married.

"We're excited and incredibly happy about our engagement and we look forward to a wonderful future together," the longtime couple announced in a joint statement.

PICTURES: Celebrity Weddings and Engagements

A source told People magazine that Lachey, 36, popped the question to Minnillo, 29, on Thursday "near a beach," in California with an Asscher-cut diamond with baguettes from Bader & Garrin.

"They are very happy," the source added. "They make each other happy."

Lachey took to his Twitter account Thursday afternoon to share the good news.

"Hey all. If anyone's heard the rumors of my engagement, they are absolutely true! Vanessa and I couldn't be happier. Thanks for all the love," he wrote.

The two began dating in 2006, and briefly split in 2009.

No wedding date was announced.

This is the first marriage for Minnillo and the second for Lachey. He was previously married to singer Jessica Simpson.