It used to be that women had little or no access to their own money, so men were expected to foot the bill whenever a couple went on a date. Times have changed, but women still tend to make less money than their male counterparts. Some women have become liberated enough that they insist on paying for their own meals and entertainment, but those with old-fashioned beliefs feel the man should foot the bill whenever they go out.
It might appear that women are taking advantage of men, and some of them undoubtedly are doing just that. For the woman with old-fashioned dating beliefs, it might be a case of being unable to afford going out at all. The couple will need to work out this type of arrangement before they date, but chances are that the old-fashioned dater will insist her date come up with the cash to spend quality time with her.