I see my "crush" today.?

She is in one of my lectures today. I have only spoken to her once which was a week ago today. I'm pretty sure that todays lecture will just be the lecturer going on and on so I won't have time to talk except maybe at the end of the lecture, my question is that I am in nature a shy person, if someone you only spoke to once sat next to you would you find it creepy? She did seem to enjoy speaking to me when we did talk last week, tho. Sorry if my question makes no sense, I'm pretty nervous today, doesn't help when I also have a test and get an essay back. *shrugs*