<human>: Today, I gave a girl I'd been looking at since the semester started. We've talked after class a few times, all of them leaving me feeling awkward, and anxious. We've been in class and been acquainted-ish since mid-August, but we hadn't spoken until a couple weeks ago.

Today, though, we had a test, so I knew I probably wouldn't be able to catch her after class, so I manned up and asked her for a pen, and after I was done with my test, I left my number on a small piece of paper and left it with the pen on her desk.

Could you distill the essence of the text into 1-3 sentences?
<bot>: How long should I wait for her to contact me before giving up hope? And if she doesn't contact me, how do I respond when I see her in class? (I sit behind her.)