I really like her! I am confused! Can you help me!?!??!?

I'm a girl, and the same thing happened to me. Except my friend was in your place. We had the biggest crush on each other since like Kindergarten. I think she's trying to tell you to make a move. She's trying to be flirty so you'll notice her more and want to go out with her. I was always mad one day and happy the next at this guy. She probably partly doing it from PMS and partly because she wants you to give her attention. I know it sounds weird, but girls are confusing, lol. Well, I hope I helped!