If your tastes run to virginity/virgin-like/innocence/reluctance, major consent issues, and/or prostitution, all of the older-male-dominating-young-female variety, then may I heartily recommend
Mes Chères Études (Student Services). Hooooo yes.
(It is a movie I wish more movies were like! Actors who can act, acting a lot of soft-core sex scenes amidst a plot. It could have been harder-core, actually, but I still give it an A. I swear, one scene was out of a Mary Sue fantasy in my head. Now where is the button for "If you liked this movie, you might like..."?
ETA: Oh oh, it's at the bottom of the page. Sweet.)
(Actual review, what? It's a little like the one season of
Secret Diary of a Call Girl I watched, the one where she tried to have a boyfriend on the side, and a little like... something with a moral like an anvil. I did not have my critic hat on. It was engaging enough all the way through. There was a lot of sexy nudity and emotional trauma, okay? *types and deletes TMI about the sort of depravity I enjoy* *leaves you to it if this is your thing*)