Secret affair with sister-in-law

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.

A New York suburban couple's marriage goes dangerously awry when the wife indulges in an adulterous fling.

When a wife becomes the breadwinner of her family after her husband loses his job, adultery becomes part of her life.

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.

On a Tuesday night, five couples have separate sexual adventures. Matt and Kris, friends for years, want to have an only-once, no-strings good time. Abby and Andrew, married, celebrate his birthday, but it's marred by angst and miscommunication. Mia and Eric are exes, making sure they are over each other. Jaime and Ken work together and this is a first date. Inez and Gord invite his roommate, Dave, to join them. By the time each couple has gone through a prelude, foreplay, sex, an interlude, orgasm, and afterglow, they've answered basic questions: can sex be anonymous, are we bored, is our marriage really finished, does anyone tell the truth, and how do we make someone happy?

When a happily married family man, who would never consider an affair, meets a beautiful woman in red, he is totally infatuated and desperate to make her acquaintance. However, as he tries out various schemes to sneak out to meet her, he realizes that adultery is not quite as easy as it looks.

After a crippling injury leaves her husband impotent, Lady Chatterly is torn between her love for her husband and her physical desires. With her husband's consent, she seeks out other means of fulfilling her needs.

A suburban architect loves his wife but is bored with his marriage and with his work, so he takes up with the neglected, married beauty who lives down the street.

The wife of a pastor who preaches against homosexuality embarks on an affair with a female writer.

A car accident and shifting affections test the bond between a married couple.