Fiction reads that include Somnophillia or its lesser known cousin Parasomnia.
Somnophillia: in which an individual becomes sexually aroused by someone who is asleep or unconscious.
Parasomnia: disruptive behaviors or events that affect your sleep. You might walk, talk or make physical movements to act out a dream or sleep sexing.
Check for content warnings by book. There is a large variety of books and situations involved.
Recommendations always welcome.