Dating

First date, GREAT!! Now she is VERY distant.

I will try to make this as short and clear as possible.

I asked this girl out to a convention that I am greatly interested in. She said she will think about it. Later that night, she text me saying to buy tickets online since it was cheaper. I responded "Sure I'll purchase some tomorrow for you and I" She responded back, "I already purchased mine." I was shocked because she automatically assumed that I will go out 100% with her. That may sound odd but sometimes things happen and there needs to be a firm confirmation between the two parties that they will attend the convention I believe but this does not matter. I just see it as she was very excited to go with me.

The next day, I see her in class and asked to confirm what time we would meet up. She said 4. I said sure. Then all of a sudden she announced that she invited her sister along with the sister's boyfriend. I was shocked but didn't mind because I knew we would split up. Another note, I'm not sure if this is important but when she announced that, she blush extremely, literally the color of a ripe tomato. Anyways, I unconsciously analysis the situation and thought that she brought her sister for (1) A comfort zone and (2) a second opinion on me.

The actually "date" started and at first she seemed quite uncomfortable but I made her comfortable because of the way I presented/acted towards her, just my personality. We talked a lot, flirted a lot, feed each other (it was a food convention) and a whole a lot of things. I honestly thought we were a couple and she responded very well to me. The sister, asked me a lot of questions from which I responded to it well and in detail. We actually got along well as well.

The next day, I made a follow up text asking her if she had fun and etc. She responded and we exchanged messages. So I was planning on going shopping and decided to invite her. She declined saying she had homework to do which I didn't think too much about.

Couple of days later, I saw her in class (we normally sit together) and she seemed...distant...she is normally very open and talks a lot to me but that day it wasn't like it used to be. At the end of class, she immediately left class but she usually waited for me. I caught up to her and asked her to walk me to class because she had an hour break. She decline and said she wanted to go eat when she normally walked me to class. Also, it takes her not more than 5 minutes to walk me to class and back to eat.

Well that's all. I know it sounds odd but her entire attitude changed towards me. She use to be very cheerful and open to me. Now she is like a double steel door shut tight with me outside.

My question is why is she doing this?

i had two possibility.

(1) She dislikes me (I really don't know why, I didn't do anything wrong and we respond well together)

or

(2) She doesn't know what she wants/scared/confused of what may happen with respect to relationships.

Both her and I have not had a BF/GF. She is pretty young however, 18.

Thanks!
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+1 y
bump, anymore more opinions?
First date, GREAT!! Now she is VERY distant.
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