Ok so I found some "nymphet" movies some of these movies do fit the nymphet lifestyle you know with the whole older man thing and some are just more for the aesthetic📺
Pretty baby (1978)
a New Orleans hooker, meets a photographer named Bellocq at her brothel one night and, after he photographs her, he befriends her 12-year-old daughter, Violet. When Violet is brought on as a working girl by her mother's madam and Hattie skips town to get married, Violet quickly loses her innocence and focuses on reuniting with Bellocq. But a life with Bellocq is compromised for Violet after her mother returns to town.
*pedophilic relationship
The crush (1993)
Writer Nick Eliot moves to a new city for a magazine job and rents a room in the house of Cliff and Liv Forrester, whose 14-year-old daughter, Adrian, instantly makes her attraction to Nick clear. While Nick romances photographer Amy Maddik at work, he has trouble fending off Adrian's advances. As her obsession with Nick grows, Adrian becomes angry at being rejected and starts attacking his property and friends.
*I've only seen pieces of this movie but it looks pretty good
Mermaids (1990)