<human>: There is a girl in my class that I have known practically my whole life. She used to be a very, very masculine tomboy but has recently had a HUGE transformation. She's started dressing in very cute clothes, acting very girly, and has been flirting around. Needless to say, I've started to become attracted to her. Along with her new appearance, she's started acting different too. She's very provocative and flirts around with many guys, which may be why I'm now infatuated with her. She definitely doesn't shun physical contact, in fact, she touches me quite a bit. She's even come up behind me and rested her head on my back and wrapped her arms around me. I can't tell if this is just because she flirts with everyone, or if she is interested in me. I don't know how to approach her since I've known her for so long and since she's made such a big change. Advice on my petty relationship problem would be much appreciated.

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<bot>: tomboy-ish girl that I've known for nine years has made a HUGE transformation and I'm suddenly interested in her.