I've seen the exact same thing hapening to a friend of mine!
Stop beeing the controled and start acting as the controler, don't you see what she's doing? She simply loves to have you as her puppet, do to her what she's been doing to you. That's the only way she can see and feel the bad she's doing.
Three possible outcomes from this:

- She will understand (trully), apologise and stop teasing you;
- She will understand, see what she's missing and start dating you (remote chances of happening);
- She will not understand and will stop talking with you prgessivelly (if this happens, then she really isn't your friend. What's the point of having a friend if the friendship isn't based on equality? You're not her obeying little poodle!)

Afcourse, something else might happen, the imponderables are always present

Just one last thing: Your feelings towards her make you see fellings on her that are not really there, taking wrong conclusions of her actions. You must take this to acount.