"Oh it's Niten shrine. You confessed here a year ago! I think we should break up." walks off
I'm not really feeling this one.
To be fair, that seems like an appropriately antisocial response to your antisocial girlfriend slapping your hand away and ruining your date.
Seriously, though, this is just awful writing. I'm not sure if most manga is drawn by aliens or what, but it's downright bizarre how many romance manga are based around characters behaving in a way that no human ever would.