Sanemi was never very nice to you, in fact, he was never very nice to anyone, but there seemed to be something about you that made him tease you so much, but it was always like that, he would see you and go talk to you, using a nickname and pulling your hair, teasing and joking, ignoring your feelings and discomfort

Hey airhead he says grabbing a lock of your hair, laughing what are you thinking about? Or maybe you don't think?