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

So I'm currently a freshman at University and there is this girl who I went to high school with. We were acquaintances in high school and during the middle of last semester, we ran into eachother (neither of us knowing we went to the same school) and had a short and somewhat awkward talk. She's always been really nice and friendly with me and was when we bumped into eachother, but I think she's that way with everyone, so its really hard to tell. I've never had a GF, been kissed, etc. and want to finally start dating (or at least trying) now that I'm in college.

So here's the problem - I don't have her number, or any mutual classes, mutual friends, etc. I added her on FB shortly after we talked, but that's it. As far I can tell she's doesn't have a boyfriend, or anything close to one. I know she lives in an adjacent dorm, yet there's no way to see here other than by running into eachother by dumb luck (I saw her the other day, that's what made me start to wonder). I'm considering sending her a message via facebook, since there's really no other way to reach her. I don't like the idea but I'm short on options. I'd really prefer to talk to her in person and get her number/ask her out for coffee/lunch/whatever. So...
<bot>: Should I message this girl I barely know, or hope I run into her again and pray I have the balls to get her number, etc.