Jack says outright that he doesn’t “recall ever making friends with” the prefect, but as he praises his little brother for having more friends than he does, he may not be adverse to the concept of friendship overall.
Kalim refers to Jack and Leona as his friends during Playfulland and then asks why Jack has suddenly slumped his shoulders: “Are you tired from all the walking? Should we find a bench and rest for a bit?”
Twisted Wonderland Reference Note 