What does it mean to like someone?

Nagisa still isn’t sure… She thought she’d managed to go from hating Mashiro to liking her, but for some reason, seeing her face still makes her hexart pound like crazy! And when an older student’s words make her even more conscious of these confusing feelings, it gets hard to focus on anything else, especially now that she’s tutoring Mashiro for their upcoming exams. The more time they spend together, the more their feelings begin to overflow…