Sasha doesn’t get the page time that Finn, Autumn, or even Jamie does, but she’s responsible for one of the most pivotal turns in If He Had Been With Me. She starts the book as Autumn’s close friend and ends it as the person Autumn’s boyfriend cheated with, and that contradiction is exactly what makes her worth a closer look.
Sasha’s Role at the Start of the Book
Sasha enters the story early on, as part of the friend group Autumn forms after she and Finny drift apart in middle school. When Autumn and Sasha leave behind their old popular crowd at the start of high school, they form an alternative social group together, outsiders by choice rather than circumstance. That kind of shift is well-documented outside of fiction, too. Research on adolescents’ perceptions of peer groups shows how much weight teens place on the crowd they belong to, and how some consciously choose to step outside the popular crowd to define who they are. For a stretch of the book, Sasha is one of the people Autumn trusts most, which is part of why what happens later lands as such a betrayal.
The Betrayal: What Actually Happens
The turning point comes when Jamie, Autumn’s boyfriend, breaks up with her the day after graduation. He frames it around Autumn’s depression being “too much” for him to handle, and in the same conversation, reveals he’s been sleeping with Sasha. It’s a double betrayal: Autumn loses her boyfriend and one of her closest friends in the same moment, and finds out about both at once. The site’s full breakdown of Jamie and Sasha’s betrayal covers exactly how that scene plays out and what leads up to it.
Why Sasha Does It
The novel doesn’t spend much time inside Sasha’s head, which is part of why she’s harder to fully judge than Jamie. What the text does suggest is a slow drift rather than a single decision: Sasha and Jamie spend a lot of time together as part of the same friend group, and the relationship seems to build the way these things often do in close-knit circles, gradually, then suddenly impossible to undo.
That doesn’t excuse it, but it’s worth separating from Jamie’s behavior, which reads more calculated, especially given the way he times the breakup around Autumn’s mental health. A University of Connecticut dissertation on friendship dissolution in adolescence found that betrayals committed by a former friend, rather than by outside circumstances, tend to cause the most serious and most lasting damage, which tracks closely with how hard Sasha’s betrayal hits Autumn compared to ordinary teenage drama.
Sasha’s Place in Autumn’s Friend Group
Sasha matters beyond the betrayal plotline, too. She’s part of the social shift that defines Autumn’s high school years, the move away from popularity and toward a smaller, more outsider-coded group of friends. For the fuller picture of who else made up that circle, Autumn’s friend group lays out the whole dynamic, and Sasha’s shift from inner-circle friend to the person at the center of Autumn’s worst betrayal hits harder once you see how embedded she was in that group to begin with.
How Sasha Compares to Jamie
It’s worth comparing Sasha’s role to Jamie’s, since they’re responsible for the same betrayal but read very differently on the page. Jamie gets a full character breakdown and a much larger share of the narrative, including his gradual shift toward possessiveness as the book progresses. Sasha, by contrast, stays mostly on the margins: present, complicit, but never fully explained. That imbalance is deliberate. This is Autumn’s story, told through Autumn’s eyes, and Autumn never gets the closure of fully understanding why Sasha did what she did. Neither does the reader.
Where Sasha Ranks Among the Book’s Characters
Sasha doesn’t get her own arc the way the central characters do, but she’s a good example of how If He Had Been With Me uses secondary characters to deepen its central relationships rather than just decorate them. For where she fits relative to everyone else in the book, the ranked character guide places her alongside the rest of Autumn’s circle.
FAQ
Does Sasha apologize to Autumn?
The book doesn’t give Sasha a redemption arc or a clear apology scene. She largely remains on the margins after the betrayal is revealed, which is part of why many readers find it harder to resolve their feelings about her than Jamie.
Were Sasha and Autumn close friends before the betrayal?
Yes. Sasha was one of Autumn’s closest friends in the alternative friend group they formed at the start of high school, which is exactly why her involvement in Jamie’s cheating feels like such a deep betrayal.
Does Jamie end up with Sasha?
The book doesn’t follow Jamie and Sasha’s relationship past the breakup reveal. Their dynamic exists mainly to explain the betrayal, not to give them a continued storyline of their own.
Is Sasha a villain in the book?
She’s better described as a flawed secondary character than a villain. The novel doesn’t spend enough time inside her perspective to fully explain her motives, which keeps her morally murky rather than cleanly antagonistic.
