i don’t think the movie was very popular. The setting was on a lake or a cape. Several houses or trailers on a grassy hill. It was about the son of the woman that lived at the top of the hill. Her son slept with her friend and neighbor. Her friends husband was abusive. Her daughter almost drowned because she left her alone while sleeping with this teenager.
Guessing, Little Boy Blue
https://m.imdb.com/title/tt0119547/