It's a joke, Cameron thinks, just her teasing or having fun, but the way she comes closer gives it a weight he has difficulty explaining. "I'll do everything in my power to keep it that way," he assures her, equally mock-solemn (although staying the responsible, sane one has long been his realm anyway. It seems appropriate, even in jest). "Although my keeping a close eye on you for signs of adapting may only contribute to your deterioration. I'm told I have that effect." There's some truth in that, actually, if only because Tyler frequently finds him every bit as annoying as Cam sometimes find Ty. It's the province of brothers, of twins, to want the other around as much as he'd prefer he stay away, he thinks.