Em Cada Coração um Punhal (1970)

Middle-aged businesswoman Paula Tessier rejects the advances of her client's amusing 25-year-old son, Philip Van der Besh, but reconsiders when her longtime philandering partner begins yet another casual affair with a younger woman. She soon learns that May-December romances with older women are frowned upon in society.

Holden returns home from college and is surprised to find his overpowering competitive father married to a much younger woman Lana. Holden quickly falls for the beauty and charisma of his step mother. A passionate affair begins between son and stepmother.

When a young man learns that his overbearing father is having an affair, he tries to stop it, only to be seduced by the older woman as well.

A young man is plunged into a life of subterfuge, deceit and mistaken identity in pursuit of a femme fatale whose heart is never quite within his grasp.

Wimpy young executive Michael is about to get pulverized by a jealous boyfriend in a bar when a handsome, mysterious stranger steps in—and then disappears. Later that night, Michael runs into a stranger on a pier, who wheedles his way into Michael's life and turns it upside down.

Office temp Charlotte Cantilini thinks she's found Mr. Right when she starts dating gorgeous surgeon Dr. Kevin Fields. But there's a problem standing in the way of everlasting bliss: Kevin's overbearing and controlling mother, Viola. Fearing she'll lose her son's affections forever, Viola decides to break up the happy couple by becoming the world's worst mother-in-law.

Humbert Humbert is a middle-aged British novelist who is both appalled by and attracted to the vulgarity of American culture. When he comes to stay at the boarding house run by Charlotte Haze, he soon becomes obsessed with Lolita, the woman's teenaged daughter.

A space-obsessed man gets the opportunity of a lifetime thanks to a Mars colonization program but finds his plans compromised by his feelings for a woman who brings him down to Earth.

In 19th-century France, doctor's wife Emma Bovary seeks to escape her dull provincial life through various extramarital affairs and extravagant spending, leading to tragic consequences.

Restless and unhappy, two couples get caught up in infidelity and deception. Barry is a sullen businessman married to Mary, a writer who is unsatisfied with their relationship. Mary begins an affair with Jerry, a smug theater professor and husband of her friend, Terri, who is also a writer. Adding to the adulterous mix are Cary, a callous doctor, and Cheri, an art-gallery assistant.