So, I like this girl for like two months, and I was making real progress. We hung out allot, and not in the way friends do, she laughed at my lame jokes, I laughed at hers, everything was great.

Then, on a Friday, we plan on going to the movies along with some friends. 2 hours later, she calls me and uninvites me saying she hates me. When I asked why she awnsered "just because".? It was really sudden, we didn't even talk after the movie-going thing! It has absolutely no reason!

Next day, I try talking to her and she tells me to shove off! To what I respond: "no, seriously, why do you say you hate me?"
She awnsers: "I told you, just because".
And on a separate occasion, I talked to her and she responded normally. Then I replied to what she said, and she responded normally again. Then, when I thought I had a converstion going on, BAM "leave me alone".
I am majorly confused about this.
Does she really hate me, or does this mean she likes me?
If she does, how do I make her like me again?

Please awnser, I'm desperate. I´m 13, if that helps.

Here are a few possibilities:

She is trying to see how you respond. To see if you will try hard to keep her in your life.
She has a boyfriend, he is extremely jealous, and wants you to stay away. Don't believe it unless you can be sure it's her (as in, see her in person. You can't be sure someone else isn't telling her what to say).
She doesn't like you, realized you like her, and doesn't know how to respond. Most likely never had a boyfriend before.
Same as above, but she does like you, and is even more confused.

Obviously, she really doesn't hate you, or else she wouldn't talk to you, and definitely give you a reason.

I say pursue it. Talk to her in person, get together, and figure out what really is going on.

I don't think she hates you.
Maybe she's afraid of being hurt.
Just assure her that you won't hurt her!
She's just afraid.

I don't think she hates you I think she's trying to see how your going to react you should do a lot of great things for her get her some presents tell her your sorry for whatever happened an try to take her somewhere speceal like a picnic