Heya, one of the devs here. Going word per word actually was a deliberate choice on our side: we wanted the Player to be typing one word at a time because it was one of our design goals to make answering feel awkward and uncomfortable.
I think it works better this way since you have this sort of stuttering dynamic when talking to the MC, as to show that you've got a crush and trying not to show it - you know, the classic slice-of-life tsundere thing :)
Glad you liked the game! <3