I see no cheating. I see a subversion of expectations. You have two girls talking, one of which adress the other as "ghost". (Expectation: the addressing girl is human). They talk about making too many attachments; ghost girl says it makes more difficult to pass on (expectation: she is talking about herself). After more talking and the realization that the ghost girl has friendzoned the beejebus outta the other girl, that girl passes on (realization: both expectations were subverted; BOTH girls are ghosts, and ghost girl was talking about the other girl passing on - which she is now free to do). Ending, we see ghost girl telling her "scary ghost tale" to a human girl (we think) who does not realize (also, we think) she is talking to an actual ghost.