Alright fellas I'm in need of a little advice. Since I split up with my long-term girlfriend some eight months back I've had quite a few successful hook-ups and one night stands but emotionally there's been no feeling for a while.
Anyway, I started a summer course this past Monday and there's this girl who I took to immediately, absolutely gorgeous, extremely intelligent, the works. After class I ran into her at the book store where I showed her around (she's not from our campus) and helped her find our stuff. Then she asked me if I wanted to join her in sitting and doing the reading together at the coffeeshop. We sat down to read but the conversation flowed really well and naturally and I took a great liking to her and I got good vibes in return. We got none of our work done, which I suppose is a good sign.
Every day of the week since then we seem to always end up talking after class walking together, and I've been getting the impression that she is the one making the first move to hang out and talk after class, although I could be reading into things too much. She's done some flirting with me (like asking if she'd get to see me when she comes down to NYC, where I'm from, commenting on my style because she liked my clothes, etc). On the Friday when we were walking out I intended on inviting her to a party we're having at our place this weekend but when I asked her what she was doing this weekend it turned out she was going away for a concert. When she asked me what I was doing and I told her we were having a big 'ol party, she asked "and I'm not invited?

" in an innocent joke sad face kind of way.
Anyway, to cut it short, I feel like I'm getting positive vibes from this girl to make some sort of move, but I wanted a second opinion. I've got her phone number (we exchanged them for class) and I've been very, very tempted to text her something, anything, because for the first time in a long time I think I'm actually connecting with another person and I'm not just thinking about getting with her or anything like that. I quite like her. Does it sound like she might be interested, or is this a girl just being friendly? And if so, what do I do? Should I text her about the party we're having and say it's missing my favourite nun (inside joke about her), should I not text? Do I wait til we inevitably speak after class Monday? This is new territory for me because I actually like this person and don't want to blow it.