In my opinion, a girl who is not straightforward and plays hard to get can hurt much more than a girl I ask out and says "no". I am a creature a honesty. I despise subtlety and have been duped over and over again in my young life that dishonest people are among my worst enemies.
Picture this: You are a guy who is having a crush on a girl who doesn't really like you. Instead of her saying "no", she plays hard to get and acts friendly and you think "hmm, she might be wanting me to chase her". It turns out, she was all along trying to distance herself from you for three months and you didn't know that.
So not only you got rejected, but you wasted so much time trying to know if she was into you or not.
That's the evil of "hard to get". You don't know if she wants the chase or doesn't really like you.
In this situation, if you want to know whether she likes you, be straightforward ask her out, she says "no", you got your answer so early and go on to another girl who might. like you.