Does this Girl Like Me?

Ok wel there is this girl in my year who acts in a way often that makes me think she likes me. She is pretty and has lots of friends. For the past 6 months she has shown an interest in me and it goes further than just politeness. She will always say hello multiple times, sometimes purely to get attention as she would often say hello a few mins after the last time. She asks me questions about stuff I am interested in even though I know she is not interested in them herself and she has asked me stuff about my past, like whether I have had a girl friend before or not. I cannot believe she would like someone like me cause she is out of my league on an epic scale. She is not the kind of girl that would try and humiliate me by trying to get me to think that she likes me. But my reasoning can not bring me to believe she likes me. Some of her male friends a few months ago said that she liked me, but it was in a teasingly way so I dismissed it. Are my doubts well founded as she could just want to broaden her friendship circle or am I just showing my ingnorance about girls and she does like me? Please help before I hurt her or make an *** of myself.