Styles, 20, and his band mate Liam Payne were answering fan questions during an interview when he made the admission that 'being female isn't that important' in a lover, reported Daily Mirror.
'Four favourite traits you look for in a lady?' the pair were asked by a journalist as they were promoting their new book.
Payne replied, "Female, that's a good trait," but Styles quickly chimed in, "Not that important".
Styles said last year in an interview that he's "pretty sure" he is not bisexual.