Nick Cannon and his girlfriend, Selita Ebanks, laughed off marriage rumors just two months ago, but the couple actually did get engaged last night in NY's Times Square.With the help of the jumbotron that projected "Selita will you marry me?", the Victoria's Secret model accepted the 12-carat diamond ring from the Drumline star, after they attended the Metropolitan Museum of Art Costume Gala."They got engaged last night," Ebanks's agent, Chris Gay of Women Model Management told PEOPLE Tuesday. "He took her to Times Square last night and did it in the center of Times Square. Then they had a party after the Met Gala to celebrate. The two of them flew to L.A. late last night because both are working."Congrats to Nick and Selita!