marcjacobs_lorenzomartone_engaged.jpgAfter months of "are-they-or-aren't-they?" rumours, Marc Jacobs has become engaged.

The New York designer and his ad executive boyfriend, Lorenzo Martone, are expected to announce the happy news this Thursday when they arrive in Brazil wearing matching rings.

The couple are headed for Sao Paulo, where Jacobs will meet Martone's mother for the first time. It is also where they will celebrate the Marc Jacobs multibrand store, which opened in January.

No wedding date has been set yet.

[Photo: WENN]