My confusion only grows with every chapter. Is this a romance or not? Does she just like him, or is she just REALLY in the mood and just enjoying how he reacts? What even is this?
I think it's just more that they are very good at hiding their true thoughts. The only reason it's so obvious for us is that we can see their inner thoughts and feelings.
Okay, I thought there was some supernatural explanation for why they don't notice him. No, she's definitely doing it on purpose for some reason. She probably doesn't like him, considering that it isn't tagged as a romance.