"That's what I thought, when I first arrived. It seems like some sort of trap, some sort of way to keep me away from what I ought to be doing. I was in a war before I came here."

He had shared these things with the first version of Ren and had trusted him. Jon didn't think it would be a breach of that trust to share them with the same person over again, even if this Ren didn't recall their relationship.