Reading about these sorts of things won't give you knowledge, it will give you false confidence. If you (or someone else) has trouble talking to girls, do you really think reading something will help them? no. Practice via doing.
You made a mistake turning the girl down (if that actually happened).
You can talk to girls without being in a relationship
And no I didnt turn her down, some random guy asked me if I would date a girl, and I replied no.
And would it be my mistake of turning a girl down if I really didnt like her?
Google?
lol
No, lol
Yahoo Q & A