If a girl isn't a virgin when she says this then its no point and its hypocritical. Everyone is damaged goods in that sense, but if a female feels that sex would give her unwanted life complications then just say "i'm not having sex". Abstinance insinuates that you are swearing it of for reasons other than drama and its a LIFE choice and not just a temporary thing.
Biggest thing a female needs to know is to not put a man in a compromising situation, if a girl REALLY wants to be chaste then she need not even put herself in sexual situations or even entertain the notion of dating cuz as @
MAKAVELI25 said SOME girl will be getting the dikk, so don't fry yourself.