Carl Grimes is new at Alexandria. He's been outside with his dad and his group for so long so he's seen a lot and went through a lot. When he went to Alexandria, he started to get along with Ron Anderson, one of your friends as well, so one day you Go to his house, when you usually met with him and Enid, and he's there too. He looks at Enid and gives her a nod, his attention was clearly on you right now. Ron speaks up "so, girls, he's Carl. Carl, they're Enid and y/n"