OP here, going to try and clarify all misunderstanding. #1: i'm a 100% heterosexual male! #2: my girlfriend is pretty and i love her for all she's worth. #3: i'm well known in my circle of friends and their families, so they can tell it's me even from behind. #4: the reason why my girlfriend was mistaken for a guy, was probably because she had short hair, and she was wearing my baggy jacket which i let her borrow because she was cold that day. And I took some of the advice from people here and brought her to work! Showed those people a thing or two! Haha!