I been best friends with this girl for like 2 years now. We went out before and we broke up after 6 months. After that we stopped talking for a couple months, when I sent her a text and we started talking. All summer long we talked, texted, hung out. I've even stayed up talking to her all night without any sleep a lot of times. I decided to ask her out again. She gave this stupid excuse of her considering me as a brother. After that our conversations got more awkward until the point where our conversations went anywhere. I still liked her a lot though. Then came homecoming, I was going to ask her to homecoming but then a old friend of hers randomly came out of no where and asked her before me. She said yes, they went to homecoming. She went out with him for another 6 months. During that period we barely talked. They broke up a couple months ago. So I decided to start talking to her again, try to build our relationship up again. Every single phone conversation, Facebook chat, IM chat was awkward. Again we went nowhere with our conversations. A month ago, I finally got through to her and we started talking a lot more. Then a week ago, I was taking my history final. I sent her a text while I was taking the test cause she had the stomach flu and I wanted to know how she was feeling. We talked for a little then I asked her if she could look up an answer to a question I didn't know. She called me stupid and never texted me back after. When I got home she posted a message on my Facebook wall saying "Your so.. I can't even describe what you are right now. I can't believe you actually asked me that. .___." After that we haven't talked. She's been ignoring my texts, phone calls, everything. I don't know what do to. I still like her a lot and I don't want to lose her again...

You need to go into No Contact, obviously this girl is making it known that she doesn't want to continue communicating with you, why you would want to bother with the way she's treated you, beats me, However I do feel you should get this girl out of your life for once and for all ways, and do so by starting N.C now, you can find out more by looking through the stickies on this "section" of the site, good luck.

I think its not a case of losing her "again" it's that you've lost her, end of...

You saud she gave a stupid excuse of her considering you as a brother. Did it ever occur to you that is the way she feels?
You just brushed that aside and continued to pursue her.
Leave her alone. She does not like you the way you like her.

Can't lose what you never had. It has never worked, and you have totally IGNORED all hints she has given you, so finally act as if you get it, and leave her alone.