Van Der Beek, 33, is best known for his work on the young-adult drama TV series "Dawson's Creek." He was previously married for six years to actress Heather McComb and began dating Brook about a year ago.
"The woman I love did me the honor of (becoming) my wife today ... I look forward to earning her for the rest of my life," UsMagazine.com quoted the actor as messaging Sunday.
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