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My wife, who has no siblings, has always said that she thought of him as a younger brother. In fact, I didn't think of him as a man either, and treated him more like a female friend. So I had no problem with him staying at our house, eating dinner at our house during breaks from work, or staying over when we missed the last train. But this... this was reality, I realized. I couldn't speak at the time, so I left the place and decided to confront my wife at night.