Sasuke was intrigued. The blonde wasn't bothered by school politics (popularity fights, strength-showing, or just plain bullying), and stayed close to the stutterer and her shadow. It was strange: he hadn't shown even a bit of interest in Sasuke, not even at the beginning. Was he someone super inportant? Or just ignorant?
He resolved to find out.
"Momma, who's the blonde boy that hangs around the Hyuugas?" He asked at dinner. "He's strange."
She paled and stammered and just generally seemed upset by the questions, so he stopped asking. But he didn't stop wondering.
He listened in at the old people's social circle and found no mention of the boy. The children at school only talked about how odd he was, that even /Sasuke/ was curious.
Sasuke decided to follow him home and see where he lived. Before he'd even begun, he was stopped by two ANBU.
"Young Uchiha, you should go home."
He could see Naruto staring curiously at him from farther along the path. With a snort, he turned and began slouching home, only to be cuffed around the head and scolded by his mother, who'd been told of his actions by the ANBU.