Read "The Dark Other" by Stanley G. Weinbaum online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"I don't remember when I first noticed it," began Nick in a low voice, "but I'm two people. I'm me, the person who's talking to you now, and I'm -- another."
Pat, looking very pale and serious in the dusky light, said nothing at all. She simply gazed at him silently, without the slightest trace of surprise in her wide dark eyes.