"Dreamwalk" by Delta. Have you ever had one of those dreams that seemed so vivid that you weren't sure whether you were awake or not? And then you decide to wake up and you think you have awakened; but you're not sure, because maybe you only dreamed you woke up. The man in this story is approached in the middle of the night by a mysterious, beautiful neighbor who informs him that he is in her dream - and a nice, hot dream it is. Delta maintains the necessary mixture of reality and unreality beautifully. Where does she get ideas like this? Another excellent story.