Zoey Deutch, Jonah Hauer-King and Ruby Cruz lead the film as Olivia, Connor and Jenny, three people whose spontaneous night together creates consequences none of them expected. What begins as a playful romantic setup becomes a story about pregnancy, responsibility, co-parenting and the difference between fantasy and real commitment.
The film was directed by Chad Hartigan from a screenplay by Ethan Ogilby. It premiered at the South by Southwest Film and TV Festival in March 2025, received a US theatrical release from Vertical on September 5, 2025.
The Threesome at a glance
| Detail | Information |
|---|---|
| Platform | Prime Video |
| Original release year | 2025 |
| Format | Movie |
| Runtime | About 112 minutes |
| Genre | Romantic comedy-drama |
| Director | Chad Hartigan |
| Writer | Ethan Ogilby |
| Main cast | Zoey Deutch, Jonah Hauer-King and Ruby Cruz |
The Threesome cast and characters
| Actor | Character | Role in the movie |
|---|---|---|
| Zoey Deutch | Olivia Capitano | Connor’s sharp-witted longtime crush, who is wary of commitment |
| Jonah Hauer-King | Connor Blake | A kind sound engineer caught between two complicated relationships |
| Ruby Cruz | Jenny Brooks | A graduate student whose unexpected connection with Connor changes all three lives |
| Jaboukie Young-White | Greg Demopolis | Connor and Olivia’s friend, who helps set the night in motion |
| Josh Segarra | Kevin | A man connected to Olivia’s complicated romantic life |
| Robert Longstreet | Paul Brooks | Jenny’s father |
| Arden Myrin | Evelyn Brooks | Jenny’s mother |
| Julia Sweeney | Suzanne | Connor’s mother |
| Kristin Slaysman | Maya | A supporting character in the group’s wider social circle |
| Allan McLeod | Roger | A supporting character |
Zoey Deutch as Olivia Capitano
Olivia is clever, sarcastic and emotionally guarded. She is Connor’s longtime crush, but she has a habit of using humor to avoid vulnerability. Her jealousy helps bring the three central characters together, yet she is the first to retreat when the evening begins to feel emotionally real.
After Connor persuades her to give their relationship a chance, Olivia begins to imagine a stable future with him. Her pregnancy appears to confirm that future, but the later revelation about the baby’s paternity forces her to reconsider what she actually wants and whether love can survive disappointment.
Jonah Hauer-King as Connor Blake
Connor is a sound engineer who has been infatuated with Olivia for years. He is more sincere and conventional than she is, but his attempt to manage every consequence of the threesome places him in an impossible position. When both women become pregnant, Connor tries to support them, attend appointments and prepare for fatherhood without fully understanding what each relationship requires.
The movie does not present him as a perfect romantic hero. His choices help create the problem, and his desire to satisfy everyone sometimes prevents him from making clear decisions. His growth comes from accepting responsibility rather than trying to preserve the fantasy that began the story.
Ruby Cruz as Jenny Brooks
Jenny is a graduate student who is introduced after being stood up for a date. She initially appears quieter and more conventional than Olivia, but she is capable of being funny, direct and emotionally perceptive. Her second encounter with Connor changes the situation from an unusual one-night story into a lasting connection.
Because Jenny still lives with her parents and comes from a more conservative family, she tells them that Connor is her boyfriend. That lie increases the pressure on all three characters. Jenny’s storyline eventually becomes less about competing for Connor and more about creating a stable life for herself and her child.
What happens in The Threesome?
Connor meets Jenny while trying to make Olivia jealous. Olivia joins them, and the evening ends with the three spending the night together. Olivia leaves early because she is frightened by her growing feelings for Connor. Connor and Jenny then sleep together again before Connor finds Olivia and convinces her to begin a real relationship.
Connor and Olivia enjoy several happy weeks together before Olivia discovers that she is pregnant. Their plans become far more complicated when Jenny arrives with the same news. Connor now faces the possibility that he may be responsible for two babies, while Olivia and Jenny must decide how much contact they want with each other and what role Connor should play in their futures.
The ending explained
The final act reveals that Connor is not the biological father of Olivia’s baby. That discovery breaks the future Connor and Olivia had imagined. When both women go into labor on the same day, Connor leaves Olivia’s side to attend the birth of his biological child with Jenny. The decision is painful, but it reflects his responsibility toward the child who is unquestionably his.
Several months later, Connor and Jenny have developed a workable co-parenting arrangement. Jenny is moving into her own home and becoming more independent. Olivia arrives with her daughter and reveals that she has named the child after Connor’s maternal grandmother. She admits that she still loves him, and Connor agrees to try their relationship again.
The ending does not erase the complications. Instead, it suggests that the characters can build a family structure that is imperfect but honest. Connor and Jenny can share parenting duties without forcing a romance, while Connor and Olivia can rebuild their relationship after confronting the truth about the pregnancy.
Is there a post-credits scene?
Yes. The post-credits scene jumps ahead to Connor and Olivia’s wedding. Greg prepares to tell the story of the threesome during his toast, bringing the movie back to the reckless night that started everything. The joke also confirms that Connor and Olivia’s renewed relationship eventually leads to marriage.
Where was The Threesome filmed?
Principal photography took place in Arkansas in early 2024. The project used the working title Three’s a Crowd during production, with filming reported in and around Little Rock. The locations help give the film a grounded, lived-in atmosphere instead of the polished look of a large studio romantic comedy.
Is The Threesome based on a book?
No. The movie is based on an original screenplay by Ethan Ogilby. It is not an adaptation of a novel, memoir or true story. The premise is deliberately unusual, but the film treats the emotional and practical consequences as a character-driven story rather than a fantasy.
Why this page can support a wider content cluster
This pillar page can link to separate articles about the ending, the post-credits scene, filming locations, soundtrack, age rating, whether the story is based on real events, and profiles of Olivia, Connor and Jenny. A separate review can target viewers deciding whether the movie is worth watching, while this page remains the central cast and story resource.
Frequently asked questions
Who are the three main actors?
Zoey Deutch, Jonah Hauer-King and Ruby Cruz play Olivia, Connor and Jenny.
Is it a series?
No. The Threesome is a feature film with a runtime of about 112 minutes.
Who is the father of Olivia’s baby?
Connor is ultimately revealed not to be the biological father of Olivia’s child.
Does Connor end up with Olivia?
Yes. They agree to rebuild their relationship, and the post-credits scene shows their wedding.
Does Connor raise Jenny’s baby?
Connor and Jenny establish a co-parenting arrangement after their daughter is born.