The couple started dating last November, People.com said.
"Just got married in greece I love being a wife," Reid said via Twitter Saturday evening, just hours after announcing her engagement online.
Jack Ketsoyan, the "American Pie" and "American Reunion" star's representative, later confirmed the wedding to People.com.
Reid, 35, was previously engaged to Internet entrepreneur Michael Axtmann and TV personality Carson Daly.
Celebrity Couples of 2014 [PHOTOS]