What's going on? How can I get her back?

[Arthur]

Hey buddy its Art from your other question, thanks for giving me 10 points btw.
So my real question to you is did you have sex with her or not, i didn't understand the whole story quite clearly?
Were you ever dating officially?
You obviously did something wrong, i am not sure what though.
I am just adding things to my other answer here.
Only you know if you love her or want her.
Like i said before talk to her in person that is the best thing you can do right now!
From your details it seemed like she wanted something physically from you but you didn't give it to her so she lost interest. I am thinking this might be sex related lol
I have alot of questions for you answer them in reply here and i will continue to assist you through this.