Yeah. Their relationship will never advance if their only interaction is offence/defense. Only so much intimacy can be inferred. I'll forgive it because kids.

So, she likes him, but (aside from story) why do you think that is? Their first interaction seems to have been when she saw his spilled manga, and she immediately began casting shade. Unless his looks were her type, I wonder what initial attraction was there to establish bullying and that 'he doesn't get mad', the only bone we have as to why the infatuation?