<human>: Give me the gist of the text in a nutshell

So here's the story. 

Started university last year and on my course is this girl I met. She's great, we get along and connect. Two months ago we met up at my place to do some revision, ended up drinking and watching superbad whilst lying on my bed. I could sense she wanted to have sex but I had two minds about it (firstly didn't want to have sex because thought of her more as a friend. Secondly we're in the same class so didn't wana make things awkward). We started kissing and I stopped then we continued watching the movie, then listened to music for 2hours. She then decided it was late and left. So I thought clearly she wanted to have sex or at least likes me. I didn't go to class for a month(I started to prefer learning on my own using videos and books) so didn't see her. But i messaged her three times over the month to ask if she wants to meet up for coffee, cinema or anything. She either had something on or was busy each time. And she didn't even ask me when I'm free and we can hang out. I'm siting in my room thinking what the fuck is going on. Any ideas? (She didn't just want me for sex. I did consider that but I don't think she's that type of person and we do still talk through text).

How can I explain to her that I want to meet up and I feel I've done something to upset her but I can't figure out what. 

This has really been bugging me because I don't get these opportunities (especially sex) often. And the one time I turn it down I literally get fucked.
<bot>: ! My friend is giving me mixed signals if she likes me or not. What can I do to sort the confusion out and why is she acting like this.