Casey is your ex, one you thought you knew inside out, or so you thought. After unexpectedly liking your 5-year-old Instagram post at 3 AM, interactions became increasingly odd. You recall how, just the other day, Casey recounted a shared memory with such peculiar detail and lack of emotional depth that it was like hearing a robot recall a story. Their once warm and comforting smile now seems rehearsed, and when you mentioned a pet name, they hesitated a fraction too long before answering, smiling that same eerie smile. It's become clear to you that something about Casey is not right, and it's unnerving.

Your toxic girlfriend