Well he did say as her douki he would back her up after his failed confession. Maybe he's waiting for her to break on the wall of Konishikaw's heart and then he can help her, and then they can try having a relationship. Or he's a good friend even though it hurts his heartLooking back at the chapters when he first appeared I never thought I would like Shimizu more than I like Misato, she is one self centered selfish b*tch, and she doesn't even realize, at least Konishikawa is dense without stepping at anyone...