I hope you don't mind if I add onto the conversation, I don't think they're lying but I do believe the adults who convinced them it's grooming were lying. I sympathize with the victim about the fact that they had an uncomfortable experience. But that is something that needs to be worked out with basic communication and that's okay they didn't know that. I fully blame the adults who (unintentionally or not) lied to the victim on what grooming really is