Certainly the mixed signals aren't helping things. Have things like throwing half her body out the window at him after winning and then saying "hey I should call Arata"
. Just goes all over the place. No wonder he went out with the other girl, seems more 'stable' and considering she made the confession there isn't a doubt on her side of things. Feel bad for the girl since if the signals keep getting thrown at Taichi he's going to be pulled right back to his original feelings (he's pretty much already there as it is).
Good job though for Chihaya by winning the whole thing. Plenty of intensity helped her win out. Though it was tough last match.