When JC first meets Justin, it's uneventful. Justin's a strange mix of something JC's mom calls cocksure and nervousness. JC likes kids, so it's not a problem to be nice. His mom taught him well, taught him to be nice, always polite, always do what you can, because you never know when you'll need someone else to do that for you.
So he grins, says "You wanna like, hang out?" He doesn't really bother much with the others, it's like it's all been split up, and every kid has someone to watch over them.
He's happy that he got Justin.