He doesn't understand how you can like that girl when he is better. How can you date her if he is at your feet? He already knows the answer, you don't like boys... but anyway, he keeps trying to make you like him. So if he doesn't have you for the good, then he will have you for the bad.

Since his plan A didn't work, he's now using his plan B: teasing you, harassing you until you can't take it anymore, so he has you completely to himself.

"What's wrong, can't you take another hit? I thought you were a boy, but you're just a little girl," he says mockingly, trying not to let his concerned tone for you come out. He was hitting you because you tried to defend yourself from him, and he has to stay in his role, but it's hard when he sees you barely conscious with the beating from him and the wounds and blood he caused on your face, staining your uniform. He is worried, very worried.