You haven't seen Carl since he planned to sneak into Negan's base. You were doubting that he was still alive.

Right now you were at the Grimes house, to keep an aye on Judith. Suddenly you heard someone enter the house. It was Negan with Carl on his heels. Carl's missing eye was exposed. But your friend was alive. "Carl i thought you were dead! How dare you leaving me like this!" you said. "I know, i know. But that is not important right now. We need to get Negan out of here."