Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I think it depends on culture. Equally if not more important it depends on the woman. Another major factor is time and place. Honestly this is too vague of a question. Have you done the bare minimum and said hello without approaching or assuming?