Guys help is she not interested im confused?

alright, so theres was this girl in my school, shes a grade below me, (where both in high school but school ova so im goin 2 juniors she goin to soph yr) and the only class i had with her is gym. i liked her, i pussyed out the whole ****** year i never talked to her bc i was shy, i didnt message her on facebook until the last week of school (regents week) i introduced my name and i said you were in my gym class this year saw you around but i didnt wanna say anything because i was kinda shy and i thought you were really cute, and then she said oh haha thanks, so i tried starting a convo, i was soo watsup, and she said nothing, im sorry but im not really looking for anything new right now, and then she said that was sweet of me to IM her and say that, she then said sorry again, then that she had to go, and then she said see ya around with a smiley face...then i FB IMed her again a few days later she could not talk bc she had to study which i understood, but then i imed her again 3 days later didnt answer, then a week later didnt answer and i just did it last night she didnt, guys is she like not interested in being friends, if she isnt imma b upset bc i realllyyy liked her shes so beautiful prob the most beautiful girl ive seen (im a really nice and sweet guy btw)....guys plz help im confused