Well, theres two reasons for this, depending on the type of girl. One type does this because she's humble or shy. Perhaps she's a bit embarrassed for being recognized or she's surprised you would take the time to notice. The second type would probably have a crush on you. Or at the least, find you attractive. When someone they hold interest in thanks them in any way they become flustered. It's common, especially if you're handsome.
Chat with our AI personalities