Canadian singer Nelly Furtado is reportedly engaged to her new boyfriend Demacio 'Demo' Castellon after an 18-month romance. The Maneater hitmaker, 28, admitted last summer (06) she had a "secret boyfriend", but refused to discuss her relationship further. U.S. magazine People reports Furtado and Castellon met in late 2005 when she was recording her hit album Loose - shortly after she split from long-term love, DJ Jasper 'Lil' Jaz' Gahunia - father of her three-year-old daughter Nevis. When asked if Furtado is engaged to Castellon, the singer's producer pal Timbaland said, "Yes."