Well its really easy. Your mind is taking control of you. You think in your head that if i say hey to her then she is just going to slap me. Well trust me, its not going to happen. I delt with this problem about a year ago but now i talk to everyone in the school. I like to say this...its mind over matter. That means that in your head your thinking about t he bad things that will happen. But in reality, nothing is really going to happen. This is what you have to do...just talk to her. You guys will get to know eachother really good. Soon you wont even be nervous to talk to her. So then you can ask her out when you guys are comfortable together and then most likely you will be dating after that. I hope this works for you and just try it it wont let you down