My Neighbor's Daughter (1998)

Two teenage girls get undressed to shower; they are briefly seen topless from a side view (breasts shown briefly), then go into a communal shower where they can be seen from the shoulders up.

A married man has an affair with a teenage girl; in one scene they kiss passionately then go swimming in a lake, fully clothed, and continue to passionately kiss and embrace.

A man emerges naked from the shower; his bare buttocks can be seen, and wraps a towel around his waist. A teenage girl who is fully clothed is in the bathroom with him; she pulls the towel away from his waist and they have sex - the man's buttocks are shown in this scene; the girl remains fully clothed. Scene is fairly passionate/explicit.

A man is violent to his teenage daughter, shaking and slapping her. She then picks up a kitchen knife and threatens him to defend herself. Scene is fairly intense.

A few uses of the "f" word.

Some use of "damn", "goddamn", "son of a bitch", etc.

A teenage girl is stalked by an older man; in one scene she runs while he chases her in his truck. She is terrified and screaming.