A lot of the movie is about the sexual relationship between the three main characters. There is a lot of discussion of sex, sexual positions, etc. There are 5 sex scenes where the man's butt and the woman's breasts are clearly visible, and there is a lot of thrusting and moaning. One as an extremely brief full frontal shot of the man. There are other scenes where there is a lot of kissing and touching, but no nudity.
At a beach, two women and a man take off their bathing suits. One of the woman's breast is visible, and the man's butt is visible from a distance.