Is she a lesbian? Or does she just not like me?

Flirting with a girl to make you jealous? WTH? she might be scared to talk to you and is afraid to be near you or maybe she gets speechless when she walk past you! Lesbian? I highly doubt it if all this happened after she started liking you! Have you sat by her or something close to her for longer than a few minutes {a whole class block]to see her reaction! Because if she's like me she'll get really antsy or uncomfortable then she probably still likes you because I get like this when I'm around a guy I like or I stop talking!

Maybe she is shy and a little upset that her friend told you she had a crush. Maybe she is checking out other girls to see how she compares. She could be self conscience about herself. Yes, move on or ask her out. Either way, I don't think she is a lesbian.

As the book reads "He's just not into you" The bottom line is that you know whether or not a women is into you. Don't just assume because she doesn't like you that she is a lesbian. That is a polar opposite of not liking you. If she was a lesbian it wouldn't be an option to date her in the beginning. So to answer your question she just doesn't like you and move on.

Talking to her when she's by her self Would be a good idea! Don't assume she's a lesbian. Because maybe she is looking at other girls to see if she looks normal like other girls!

Our behaviors are usually odd I used to that too stare at them until they were out of sight but me...I wasn't checking the girls out what I was doing was looking at how they were dressed - are they better than me, do they have better styles or better bodies, is their butt nicer than mine...that's what I usually thought when I looked at girls but that doesn't define me as a lesbian, I think it would define me as an amateur who is self-conscious and people used to think - in high school that I was a lesbian too, but I also dressed as a tomboy - maybe that's what she thinks or the thing may be is that maybe just maybe she's trying to figure out her sexual orientation, or she's self-conscious of how she looks many girls stare at other girls for those reasons - just like I did.

Or - did you ever think that maybe someone said something to her about you? Like - either you said something bad about her and someone told her that or maybe she might have heard someone say something about you that she didn't like? Or maybe there's something bothering her - that she wants to get off her chest but she can't find the words how to do that - I would try to talk to her somehow or someway, maybe follow her after school and confront her - not stalk her, she'll get scared just catch her after school and ask her what's going on? Try to do something like that, Good Luck!

Either way it doesn't sound promising for you. I'd keep an eye out for other girls.