Its the end of senior year yet i'm still bothered by one girl i like......?

Ok, the title seems a bit misleading but basically..........I really liked this girl and i tried very hard to be her ideal friend by talking only about the things she liked and it didn't work(she blocked me on aim 3 times, the 3rd time, she didn''t unblocked me at all.....). All i wanted to do was just chat with her and make her smile......and i did.....but the moment i did something she didn't like, she ignored me..............i've coped with this weird relationship between us and at the 2nd to last day of high school, i called her and asked her if we could hug on graduation (just as a goodbye gesture, since we're definitely not going to see each other again) and when graduation came, she just blew me off.............i even asked her "Do i get my hug now?" and she just said "ehh...." and walked away. Im just annoyed at the fact that i tried to maintain a FRIENDSHIP between us yet she didn't even care. I just want your feedback on this situation.