Eddy en Stuart delen een studentenwoning. Door een misverstand in de administratie wordt Alex, een studente, hun derde kamergenoot. Al snel valt Alex voor de rustige Eddy, en Stuart ziet Alex wel zitten. Eddy zit in de knoop met z'n homoseksuele gevoelens en daarbij gaat hij nog eens warme gevoelens koesteren voor Stuart. De drie kunnen het als vrienden goed met elkaar vinden, maar sommige gevoelens gaan voor problemen zorgen.
Nee, helaas is Threesome nog niet beschikbaar op Netflix in Nederland.
| Directing | Andrew Fleming | Director |
| Production | Brad Krevoy | Producer |
| Camera | Alexander Gruszynski | Director of Photography |
| Editing | William C. Carruth | Editor |
| Directing | Phil Robinson | Second Assistant Director |
| Production | David Stein | Associate Producer |
| Sound | Thomas Newman | Original Music Composer |
| Crew | Ralph Sall | Executive Music Producer |
| Costume & Make-Up | Deborah Everton | Costume Design |
| Art | Ivo Cristante | Production Design |
| Writing | Andrew Fleming | Writer |
| Crew | BJ Davis | Stunt Coordinator |
| Art | Ken Larson | Art Direction |
| Art | Tim Colohan | Set Decoration |
| Sound | Giovanni Di Simone | Sound Mixer |
| Costume & Make-Up | Patty York | Key Makeup Artist |
| Costume & Make-Up | Clare M. Corsick | Key Hair Stylist |
| Crew | George Gale | Post Production Supervisor |
| Sound | William C. Carruth | Supervising Sound Editor |
| Sound | David C. Eichhorn | Sound Effects Editor |
| Sound | Jeffrey Pollack | Music Consultant |
| Sound | Bill Bernstein | Music Editor |
| Camera | Bruce Alan Greene | Steadicam Operator |
| Production | Ed Mitchell | Casting |
| Production | Robyn Ray | Casting |
| Production | Tracie Graham-Rice | Unit Production Manager |
| Directing | Jack Breschard | First Assistant Director |
| Directing | Richard J. Levin | Second Assistant Director |
| Art | Eric London | Set Dresser |
| Camera | Katherine M. Butler | First Assistant Camera |
| Camera | David Garden | Second Assistant Camera |
| Sound | Paul Vik Marshall | Boom Operator |
| Sound | Tom Caton | Boom Operator |
| Sound | James Battersby | Boom Operator |
| Costume & Make-Up | Sonya Ooten | Wardrobe Supervisor |
| Costume & Make-Up | Brenna Gibson | Costumer |
| Camera | Abe Perlstein | Still Photographer |
| Directing | Martin Kitrosser | Script Supervisor |
| Directing | Kate Morrison | Script Supervisor |
| Art | Raymond Consign | Storyboard Artist |
| Production | Mike Johnson | Extras Casting |
| Production | Jennifer Sloan | Casting Assistant |
| Directing | Jack S. Krevoy | Second Second Assistant Director |
| Directing | Robin Winter | Second Second Assistant Director |
| Directing | Matt Hinkley | First Assistant Director |
| Directing | Robert A. Neft | Second Second Assistant Director |
| Camera | Jacek Laskus | Director of Photography |
| Camera | Chris Lombardi | First Assistant Camera |
| Camera | Ray Milazzo | Second Assistant Camera |
| Art | Tim Colohan | Art Direction |
| Art | Bill Staples | Set Decoration |
| Sound | Mark Weingarten | Production Sound Mixer |
| Sound | Lynn Bopeley | Boom Operator |
| Costume & Make-Up | Cheryl Voss | Key Makeup Artist |
| Costume & Make-Up | Eryn Krueger Mekash | Makeup & Hair Assistant |
| Production | Dawn K. Thomas | Production Coordinator |
| Editing | Tom Dailey | Assistant Editor |
| Sound | Robert W. Glass Jr. | Sound Re-Recording Mixer |
| Sound | Richard D. Rogers | Sound Re-Recording Mixer |
| Sound | Frank Fleming | Sound Recordist |
| Sound | Ron Bedrosian | Foley Mixer |
| Sound | Bill Bell | Foley Supervisor |
| Sound | Jill Schachne | Foley Artist |
| Sound | Tim Chilton | Foley Artist |
| Directing | BJ Davis | Second Unit Director |
| Production | Bradley Jenkel | Co-Producer |
| Production | Tracie Graham-Rice | Line Producer |
| Production | Steven Stabler | Producer |
| Production | Cary Woods | Executive Producer |
