What to do?

This is a rather long story, but I'll keep it as short as I possibly can. Basically, there's a girl I like in my year (Year 10) who is in a few of my classes but not in my form. We've known each other since Year 7 but only really got talking at the start of Year 10. We were good friends until she went out with someone else from Y10 during Easter who treated her like dirt on the bottom of his shoe, literally. They broke up, and I started to fall for her not long after. However I only told her this morning, before assembly. Lessons prevented me from seeing her till lunch break, when I received a text from her saying she didn't feel the same way and just wants to be friends. This annoyed me a little bit considering she was standing not 50 metres away from me and didn't have the guts to tell me to my face. Obviously I was quite sad - I've never felt this way for any girl before. When I got home, I had a two hour text conversation with her, in which she said she wasn't expecting it and didn't know what to do or how to tell me the bad news. She told me she felt really bad about it, which I told her not to feel. My question is, what do I do? I could keep pursuing her, settle for being her friend and endure her possibly going out with someone else, or cut off contact. I still want to go out with her and would do almost anything for her, but the manner in which I was rejected and the fact she flirts with other boys makes me think twice. She's in all of my lessons tomorrow apart from PE as well. Apologies; this is quite long after after all :D Oh and please no replies stating oh there's hundreds of other threads like this. No there ain't. Each case is unique. And no smart-arses! ;) :p

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