<human>: Can you provide a brief overview of the text?

So I've been seeing this girl like once a year for about 4 years, friend of friend, went to concerts together, blabla, thinking nothing more than DAMN she's cute.

Lately we've started having more of a thing going on. Last year we went for a beer, nothing happened until this year, she had a BF anyway. I came back from a trip in Europe, she said we should go talk about that over a beer....

My cue! I invite her to this nice romantic pub, thinking hey, she's nice and pretty, might as well go for it. So now that was mid august. The "date" went well, I told her I was going to Arcade Fire with a friend about two weeks later. Wanna come? The show is not in our home city but in a bigger city where she moved to study last year.

Well she accompanied me and my "wingman" (my bro is a goodlooking casanova, fml). We had dinner, went to the show, then for a beer, which was all super exciting. During the show she was enjoying herself but even though I was looking for an opening to get to dance with her, it didn't seem like that is something she wanted to do at the moment. The aftershow drink was super fun and all and now we've been texting on and off for about 2 weeks since that happened. I don't really know her all that much, but I have a crush and I don't know how to ask if she is seeing someone at the moment.

So instead of stalking facebook, I should probably ask her outright, but then I don't wanna blow my chances either, she's really really nice.

What should I do? She's 3 hours from here, and I was already planning to move over there even before I really had a ball rolling with this whole thing. I'm not considering simple hookups with her, I'm going for something more serious.
<bot>: I am afraid she might already have something going on, how to ask for a third date and make sure unobstrusively?