You were out again,the first time you went out by you own ,you told Carl about Siddiq,the boy you met outside.

Carl didn't even understood why you cared so much about that guy,but when you told him that you were about to go again a gut feeling told him to go with you.

so he did,he followed you without you noticing...you were fighting walkers with that guy,which he didn't get the name ,when a walker was about to bite you.

"Hey! watch out"

he said and shoot at the walker.