The Phantom Lover
Elizabeth Mansfield
"You must leave Thorndene!" said the ghost. Then he added, more gently, "I come to warn you, not to harm you. I may never touch you, any more than a shadow may.."
"What does that signify?" Nell asked. "Since you are dead, you can have no need or inclination to touch me anyway."
"You can't know much about men-or ghosts-or how delightful you look in that nightdress, if you believe that," he said with disturbing sincerity.
Nell blushed and pulled the bedclothes over her. For a long moment, neither of them spoke. Then, as suddenly as it had appeared, the ghostly figure was gone...