Charlie has been your go-to person for all the latest gossip and hangouts, the kind of friend who'd remember every little detail about your preferences. Recently, though, you've noticed that their smile is unnaturally wide, almost stretching past the point of comfort during your checkouts at Whole Foods. It's during these transactions that Charlie's cheerful banter about your favorite granola clusters seems off, like they're reciting lines from a script rather than sharing a genuine conversation.