Threesome is a 1994 film, written and directed by Andrew Fleming. The film is an autobiographical comedy mixed in with some social commentary, and is based on the college memories of Fleming. It was given an R rating by the Motion Picture Association of America.

The film starts out with two college students, the shy and intellectual Eddy (Josh Charles) and the All-American jock Stuart (Stephen Baldwin), ending up with a female roommate. The university thought that Alex (Lara Flynn Boyle) was a man (based on her name) and thus the three students are forced to live with each other until the university can move Alex to a female residence hall.

Eddy falls in love with Stuart; Alex falls in love and tries unsuccessfully to seduce Eddy; and Stuart is in love with Alex. The trio become good friends and scare off anyone who tries to seduce the other. Eventually, Alex, Stuart and Eddy agree to have an actual threesome and that seems to destroy the friendship, and raises the possibility that Alex might have become pregnant.

After the threesome they start to drift apart. Three weeks later the semester ends and Alex is finally moved to a female dorm. The next year Eddy got a single dorm with no roommate and the three continue to drift apart. Eddy (who acts as the film's narrator) eventually finds a boyfriend, Stuart finds happiness in a monogamous relationship with a woman and Alex remains single. While they drifted apart, only to see each other for lunch occasionally, they do not seem to regret the friendship they had while in college.

Upon release, the film received mixed reviews. Critics such as Roger Ebert felt that film was unfunny, and that "Like many kids their age, these three are more bold in talk than action, and the movie sounds right; it sounds like undergraduate human dialogue, intended to shock, to liberate, to amuse." Yet, even Peter Travers' review for Rolling Stone magazine wrote, "We're supposed to get all teary when kinkiness threatens to break up a friendship that was hard to swallow in the first place. There's lots of glossy cinematography, courtesy of Alexander Gruszynski, as the three lovers wander the campus separately, looking contemplative. Now there's a laugh. Eddy, a film student, actually makes reference to François Truffaut's ménage à trois classic, Jules and Jim. Eddy, you wish."

The film has been viewed in a new light as one of a group of films marketed at Generation X, that were released in the early 1990s and which helped to pave the way for more openness in American cinema about human sexuality and more positive portrayals of gay characters. In this historical sense, the gender and sexual politics in Threesome are compared to other major films such as Pump Up The Volume, It's My Party, My Own Private Idaho (1991), Buffy the Vampire Slayer (1992), Philadelphia, Wayne's World, What's Eating Gilbert Grape (1993), Reality Bites (1994), Naked In New York (1993), and Hackers (1995).

Charles played a gay character and Baldwin played a character who was at least slightly bisexual. At the film's end, both characters are alive and happy. While Baldwin's character asserted that he was heterosexual, he played an anti-intellectual tough guy who treated his gay roommate as an equal. Alex played a liberated woman who loved herself and her own sexuality. All these characters were a sign of the cultural changes occurring in society. Yet the film did not destroy anyone's career. Sexuality on or off screen was less of an issue than it had been in the past. The director and the cast all went onto have successful individual careers.

In 2001, a DVD version of the film was released with some special features; a director's audio commentary, an alternate ending, various language subtitles and cast talent files.