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Looking back now, there were certainly signs. She asked me about my overtime and business trip schedules in great detail, and she always kept my cell phone with me, and frequently paid attention to my makeup and hairstyle. There was some sense of incongruity, but since I'm mentally weak, I deliberately kept those thoughts in the back of my mind, and if I let it go, I'm sure it would end in this cruel way. But maybe that's what you wanted...