Hey guys, need a bit help on this one..

So I like a girl in my class, her looks are about HB7, but I wan't to turn her in my girlfriend, and IMO a girlfriend shouldn't be a HB9,5 while her 'inside' is around a 5.
We have about 7 subject together and first I never talked to her, or it was a Hi, how do you do? nothing that connected us, no friendzone, no attraction. But recently that all changed and we have been texting (we had detention together, and she asked for my number, I said: does my number even matter, enough people have it already.. (hoped for a reaction like yeah of course (she didn't gave one) but she texted a friend of me for my number XD)) we also e-mailed, and since then I am connecting with her a lot on intellectual level.
But before I end up in Friend-Zone, I need to create attraction, but my question is HOW?! I don't have a lot of problems with random girls, but I am now a little to far in friendzone, or at least I feel like I am.

so any tips on how to create attraction to a girl you see every day?

Read this thread, post number 3

Start up steps for a beginner

um... she went through all that to get your number?

and you NEED attraction?

seems like your set dude. btw, i like the hard-to-get and not playing into her frame, but somehow the way you denied the answer seems a little too much on the jerk-side. even a "give me YOUR number and ill text it" may be just enough to get her into your frame. seems like she didnt push cause she might have thought u were being a bit of a jerk. if your dealing with 7s here u dont need to super-neg. her confidence prob isnt as sky high as a 9 or 10.

just keep doing your thing, be alpha, and be nice once and a while. remember, dont punish if she is playing INTO what you asked. you need to reward once in a while too.