When Ethan arrives at the airport just in time to declare his undying love for his girlfriend, love appears to have conquered all. The scene, however, is really the ending of Ethan's novel, which his agent calls "unrealistic." Ethan soon meets a waitress, Jesse, and falls in love with her despite her growing devotion to Troy, a charming businessman. But the line between reality and fiction becomes increasingly blurred.
Unfortunately the movie My Girlfriend's Boyfriend is not yet available on HBO Max.
| Directing | Daryn Tufts | Director |
| Writing | Benji Smith | Story |
| Crew | Tom Allen | Driver |
| Writing | Daryn Tufts | Screenplay |
| Production | Rick McFarland | Producer |
| Production | Alyssa Milano | Producer |
| Production | John de Blas Williams | Unit Production Manager |
| Directing | Aaron Walters | First Assistant Director |
| Directing | Mark Spencer | Second Assistant Director |
| Directing | Ryan Pederson | Second Second Assistant Director |
| Production | Lauren Bass | Casting |
| Sound | Sam Cardon | Original Music Composer |
| Camera | Brandon Christensen | Director of Photography |
| Production | Nate Jones | Executive Producer |
| Production | Joe Pia | Executive Producer |
| Production | Gavin Bentley | Production Supervisor |
| Production | Benjamin Hunt | Associate Producer |
| Directing | Kristin Ludwin | Script Supervisor |
| Writing | Daryn Tufts | Story |
| Writing | Ben Welch | Script Editor |
| Camera | Dean Aoki | First Assistant Camera |
| Camera | Steven L. Carter | Second Assistant Camera |
| Camera | Lauren Brady | Additional Second Assistant Camera |
| Camera | Steve Freebairn | Digital Imaging Technician |
| Camera | Don Muirhead | Steadicam Operator |
| Camera | Steven Holmes | Jimmy Jib Operator |
| Lighting | Dennis L. Peterson | Gaffer |
| Lighting | John K. Farr | Additional Gaffer |
| Lighting | John Raymer | Best Boy Electric |
| Lighting | Brandon Gleave | Electrician |
| Camera | Al Stoddard | Key Grip |
| Camera | Allen Dial | Best Boy Grip |
| Camera | Adam Rasmussen | Additional Grip |
| Camera | Sean Bagley | Additional Grip |
| Camera | Tyler Meiners | Additional Grip |
| Camera | Brandon Ellsworth | Additional Grip |
| Art | Kenneth S. Hill | Production Design |
| Costume & Make-Up | Alyson Hancey | Costume Designer |
| Costume & Make-Up | Greg T. Moon | Key Makeup Artist |
| Art | Timothy M. Barlow | Leadman |
| Art | River Coss | Set Dresser |
| Costume & Make-Up | Shantell Guy | Set Costumer |
| Costume & Make-Up | Betsy McFarland | Costumer |
| Sound | Paul H. Maritsas | Production Sound Mixer |
| Sound | Noel Espinosa | Boom Operator |
| Production | Sonja Suarez Carey | Executive Producer |
| Production | Sonja Suarez Carey | Location Manager |
| Production | Christopher D. Morgan | Assistant Location Manager |
| Production | Cindy McLean | Location Assistant |
| Production | Jordan Bass | Casting Assistant |
| Production | Erin Cameron | Casting |
| Production | Benjamin Hunt | Extras Casting |
| Production | Amy Morgan | Extras Casting |
| Production | Michael Risk | Extras Casting Assistant |
| Production | Troy Lee | Extras Casting Assistant |
| Crew | Suzanne Agis | Actor's Assistant |
| Crew | Joshua Cameron | Stand In |
| Crew | Lauren Head | Stand In |
| Crew | Kassie McClure | Stand In |
| Crew | Diana Singh | Stand In |
| Production | Joseph O'Driscoll | Production Assistant |
| Production | Angela Rawling | Production Assistant |
| Production | Evan Sachs | Production Assistant |
| Production | Natalie Murdock | Production Assistant |
| Production | Matt Taylor | Production Assistant |
| Production | Zack Livingston | Production Assistant |
| Production | Lisa Borschel | Production Assistant |
| Production | Grant Esplin | Production Assistant |
| Production | Melanie Hamann | Production Assistant |
| Production | Kathy McFarland | Production Accountant |
| Crew | Nate Barnes | Security |
| Crew | Jeffrey M. Fischer | Transportation Coordinator |
| Crew | Mark Colloton | Transportation Captain |
| Crew | Bert Lund | Driver |
| Crew | Ron Bean | Driver |
| Crew | Chloe Jarema | Craft Service |
| Crew | Choralie Jarema | Craft Service |
| Camera | Josh Wood | Still Photographer |
| Camera | Stacy Young | Still Photographer |
| Directing | Phil Hunter | Second Unit Director |
| Camera | Rick McFarland | Second Unit Director of Photography |
| Lighting | Al Stoddard | Gaffer |
| Lighting | Phil Shepherd | Additional Gaffer |
| Camera | Kevin Woodward | Key Grip |
| Editing | Ethan Vincent | Editor |
| Editing | Rick McFarland | Editor |
| Editing | Jenirae Reynolds | Editor |
| Sound | Greg Jefferson | ADR Mixer |
| Sound | Steve Bucino | ADR Mixer |
| Editing | Russ Lasson | Colorist |
| Art | Bryan Beach | Title Designer |
| Sound | Jon Lee | Music Supervisor |
| Sound | Cory Milano | Supervising Music Editor |
| Sound | Jamen Brooks | Music Consultant |
| Sound | Ryan Tilby | Musician |
| Sound | Todd Sorenson | Musician |
| Sound | John Hancock | Musician |
| Sound | Ron Saltmarsh | Musician |
| Crew | Nate Jones | Thanks |
| Crew | Thomas Milano | Thanks |
| Crew | Kurt Hale | Thanks |
| Art | Jan Allen | Graphic Designer |
| Art | Phil Hunter | Graphic Designer |
