heres a good story. DONT WAIT TO LONG. My gf had a cursh on me. After she gave up i had a crush on her. And right when i was bout to talk to her, I learned she had a "bf" i say that because he never talked to her and is a complete gay in denial and will never admit it. They never held hands or kissed in a 5 month dating...*YIKES* but yeah just make sure you talk to her before somone else does. If you are taking a fancy you better bet theres atleast 1 other person who likes her too. Whats the worst that can happen rejection? If that happens youll be back where you started so no worries! Also dont let your weight be a factor in being shy. You'd be surprised at how girls will ignore looks over personality...trust me i've seen it in people at my old school! GOOD LUCK!