Responses
i dont know any spoilers but maybe he meant that he wouldn’t have put him in danger if it was him, because im pretty sure he has a plan about destroying the system or something like that. It means that J now will put himself in danger to save others because thats just who he is. By him being closer, now he can’t easily hide stuff

Sorry for saking but What did he mean by "if i known he was j i wont let him get close"?