Older man, who marries young woman, is a very good man but a terrible lover. She is a virgin when they are married. The couple is shown having sex on their wedding night; however, there is no nudity (they both wear old-fashioned nightshirts that cover them completely above the waist, and they don't remove them). There is no foreplay beyond ordinary mouth-to-mouth kissing in this scene, and the experience is not fulfilling for her, though presumably it is for him because he doesn't really know any better and is apparently completely innocent about how sensual sex can be. He is shown having a very quick orgasm and falls asleep.
A married British soldier and a married womay have an affair, and we see them making love in the woods. There is nudity and the experience is very sensual. We see one of her breasts. During their first encounter, she has an orgasm for the first time in her life - twice.
The local priest realizes that his parishioner is having an extramarital affair, and expresses his disapproval without actually talking about sex.