<human>: Can you give me the gist of the text in a nutshell?

We are both students at different universities. I had a girlfriend over the summer and every single time this girl and I were left alone she always asked me about how my girlfriend is doing, so I started thinking about everything after my (at the time) girlfriend broke up with me. (November 2014)
I tried keeping contact with this girl, and we connected. I'm just afraid of falling into her friendzone (as I will explain next)

She invited me to her college for the weekend, and said I can sleep over at her apartment (on the couches) First day currently, I chilled in her room on her bed. She was sitting on a chair doing work on her table. She was starting most of the conversations, I occasionally talked too, did not want to distract her from her work. (I also have anxiety (social®ular)) She seems to trust me with a bit more personal info. However, as I said earlier, I am afraid of falling into the friendzone, I tend to get feelings quick and doing my best on controlling them. I'm not a "hookup" or "one night stand" type of person, but I understand "fun" occasionally should be an exception ;) As long as nobody is hurt emotionally or physically in the progress.
Back on topic, she went to the washroom for #1, took her make up off and put on glasses, and its as if she never had make up on in the first place because she still looks pretty. :$ Is that a sign of being friendzoned, or in any way shape or form a hint that she "trusts" me in 'that' way?
Any advice on what I should be watching out for? I am with her for 3 nights, first night almost done. I will be hanging around with her most of the time over the 3 days. Me personally, shy individual (slowly improving that habit of mine of being TOO shy) I'm a bit inexperienced in this whole girl thing, I really started getting out of my shell and started talking to people about a year ago.
<bot>: I'm over at my friends college for the weekend (3 nights) and I am trying not to fall into friend zone instead a possible (relationship?) or just some "fun".