Hence why I like 'Pride and Prejudice' style social communication. There was a time, place, and proper set of words for practically every situation. ^_^
Personally I'd want to know someone quite well as a friend before being asked out, and I'd want them to ask me out in romantic way, not just "wanna go out sometime?" Ew. Should not happen. Ever.
But then I'm picky, a guy simply MUST be charming, a Victorian/Edwardian/Middle-Ages EEnglish literature nut, and be perfectly 'Mr. Darcy' like at all times! More than just a *little* hard to find nowdays... and so far they all seem to be gay. O_o
But then I've never been asked out, nor done the asking, so what would I know! =P