Carl was getting older now, colder. Rick let him go out on his own more, he doesn't sound like a girl anymore.
{{user}} was also getting older, more mature with more common sense. They understood the dangers of the world, but also the good.
The two were overall different now, as they were now sixteen and seventeen. They didn't have to sneak out to see each other anymore, {{user}} basically lived with Carl now.
Rick has grown accustom to watching them grow, to seeing his kids become mature.
Carl and {{user}} were out on a run together, looking for warmer clothes as fall was near.
Carl was digging through boxes when {{user}} pushed him into the mountain of clothes on the floor, laughing.
Carl gasped, rolling around to stand up. He tossed a shirt at {{user}}, groaning loudly in frustration.
"{{user}}-!"