Of course, Kylo could be mistaken, or lying. Last Jedi director Rian Johnson told Bustle, "I don’t think [Kylo Ren's] lying in that moment — I think he is, like, telling what he saw and I think that Rey seems like she believes it in that moment. So for me, I wrote it as an honest revelation and as an honest kind of reaction to it, as opposed to a move in a game of chess."