What is this girls problem PLEASE READ UNTIL END PLEASE?

Hi my name Is rory and am 16. If a girl is trying to make you jealous would she talk about a crush she likes but NEVER mentions his name either do her friends? I know this sounds obvious that I would be in the "friend zone" we are not really that close and she tells this to another of her guy friends. She never comes to me to explain all her problems and most people see me as mean and I act mean alot to be funny and usally works. A boy who liked her started to flirt with her on facebook and she turned him down when she said she was in to someone else. He asked who and she said how could you not know by now. Then he said oh blehh rory. I know for sure she doesn't like this guy because she always jokes with him in cl and thinks he is gross. Another time she was talking about flirting with me on facebook and called me really hot. When I am in cl with this girl she will always flirt and joke about us having then everyone at the table will laugh. All her friends seem to know my name too and I don't even know them. Anyway she would get really flirty with me like play with my hair, give me hugs, and once got really excited when I held her hand. Then all of sudden when we were going to hang out and go for ice cream she starts talking about this guy she has a crush on. What the hell I felt so horrible I couldn't even speak. She did say something to me once when she was talking about that she was just kidding with me but this was because I looked upset to her and she said okay i am just kidding and giggled. She suddenly just comes out of the blue and says there is this really hot guy I like and we can't hangout this weekend because he is grounded to her friend Seger when he asked if you could bring him. Seger has never met him and doesn't know what he looks like or who he is. She asked me about it once saying what should I do about this guy and one of her friends barged in and said she wants to **** you. She said NOOO and giggled and said to her friend seriously should I text this guy. I was like wow after all that flirting I felt important now I feel like crap. I mean this whole week she has barely said anything to me and I sit right next to her too.