What is wrong with me and am i pretty?

Im 14 and adults and my friends always tell me im so pretty. I have long brown hair, deep blue eyes, im tan, and i have an athletic body. everywhere i go people tell me im so pretty. just yesterday we were at a resturant and the waitress glanced at me, looked away, then looked back and she was like, wow, your really pretty. I go to a really small cathloic school and theres only like 200 people in the whole school (preschool-8th grde . There is not one person in the school that has a boyfriend/girlfriend. im not mean, im auctually really nice. Ive only been asked out by one person before. WHY DO GUYS AT MY SCHOOL NOT LIKE ME?!?!?!?!?! what i dont understand is theyll come up to me and be like, i really dont like you. So i ask them why and they just say, i dont know, theres nothing wrong with you i just cant put my finger on it. It gets me so mad. Whats going on!!!!??????