Man, since gender is difficult to pin down in Japanese conversation, this manga kept flip-flopping back and forth between him and her.
Now we know that Evil Eve is in the house and trying to keep Tarou all for her self. :-o
Geez all he does now is come off as a super creep. All I can think of is "gross" like those girls say to the lame MC in many of these school life mangas. :-P