Lili Reinhart Explains Why The Love Hypothesis Movie Had to Change the Book
Lili Reinhart discusses the challenge of adapting Ali Hazelwood’s The Love Hypothesis for the screen, including what could remain, what had to be left out and the pressure of pleasing readers.
Turning a beloved novel into a movie is never a matter of transferring every page directly to the screen. A book can take its time with private thoughts, side characters, backstory and small emotional turns. A film has a much tighter window in which to establish its world, develop its relationships and give audiences a satisfying ending. That tension sits at the center of the conversation around the movie adaptation of Ali Hazelwood’s The Love Hypothesis, and Lili Reinhart understands why readers may be watching closely.
In discussing the project, Reinhart addressed the changes that come with bringing the novel to film. Her explanation was straightforward: a movie cannot include every single thing that appears in its source material. Some moments may be condensed, some elements may be rearranged and others may not make the transition at all. Those decisions can be difficult for people who already have a strong attachment to the book, but they are also part of the basic work of adaptation.
For readers, the appeal of a book is often found in details that might seem small from the outside. A particular exchange can become memorable because of its wording. A character’s inner monologue can shape the way an entire relationship is understood. Even a brief scene can carry meaning after a reader has spent hours inside the story. When that story becomes a movie, those details must compete with time, pacing and the practical demands of visual storytelling.
That does not necessarily mean that a change is a rejection of the novel. More often, it reflects the different tools available to a filmmaker. A book can explain what a character is thinking in a paragraph, while a movie may need an expression, a pause or a conversation to communicate the same idea. A novel can move between locations without much difficulty, but a production must account for schedules, sets and the rhythm of the finished film. The result may look different while still aiming for the same emotional effect.
Reinhart’s comments place the adaptation process in that larger context. Rather than suggesting that the movie can reproduce the book exactly, she acknowledged the necessity of selecting what belongs on screen. The question is not simply whether a scene is popular with readers. It is whether that scene serves the structure of the film, helps define the characters and moves the story forward in a way that works within the medium.
That selection process can be especially sensitive when the source novel already has a devoted audience. Readers arrive with their own versions of the characters and their own expectations about key moments. They may be hoping to see a favorite exchange recreated word for word, or waiting for a scene that helped define their experience of the book. A movie cannot satisfy every individual interpretation, so the people making it must decide which qualities are most essential to preserve.
For The Love Hypothesis, that means the film’s connection to Hazelwood’s novel will be measured in more than a checklist of included scenes. Audiences will likely pay attention to whether the central dynamic feels recognizable, whether the tone retains the book’s appeal and whether the emotional stakes survive the transition. A familiar title and premise can bring viewers to the theater, but the adaptation ultimately has to function as a movie in its own right.
Reinhart also spoke to the pressure involved in taking on a role connected to a popular book. That pressure can come from several directions at once. There are readers who have waited to see the story adapted, viewers who know the actors from other work and audiences who will approach the film without having read the novel. Each group may be looking for something different. One audience may want faithfulness, another may want a compelling romance and another may simply want a clear, entertaining film.
It is easy to imagine that pressure becoming overwhelming, particularly when an actor knows that a performance may be compared with the character readers have carried in their heads. A written character belongs partly to the audience that interprets the story. A screen character is more concrete: an actor’s voice, face, physicality and timing become part of how the role is understood. That visibility can make the transition feel personal, even when the creative decisions are shared among many people.
Reinhart’s response suggests an awareness of that distinction. The goal is not to compete with every reader’s imagination or to promise an impossible level of fidelity. Instead, the performance has to help the character work in the film’s specific version of the story. That requires making choices rather than attempting to preserve every possible interpretation at once.
The same principle applies to the screenplay. Adaptation is often described as a process of cutting, but it is also a process of translation. Material that works on the page may need to be expressed differently on screen. A scene that once carried several pages of explanation might become a short exchange. A collection of separate moments might be combined into one. Information that the book reveals gradually could be introduced earlier so that the film’s audience can follow the story without access to the novel’s full context.
Those changes can alter the shape of a story without necessarily changing its purpose. A movie may streamline the plot, reduce the number of supporting elements or shift the emphasis among relationships. It may also make a character’s conflict more visible because film depends so heavily on behavior. These decisions are not always obvious to viewers, but they determine how quickly the story moves and where its emotional focus lands.
For longtime fans, the most important question may be what the filmmakers consider non-negotiable. Reinhart’s remarks point toward a distinction between individual details and the larger experience of the book. A line can disappear while the feeling behind it remains. A sequence can be reworked while the relationship at its center still develops in a recognizable direction. Faithfulness, in that sense, can involve preserving the spirit of a story rather than reproducing its exact architecture.
That approach is not guaranteed to prevent disappointment. Even a thoughtful change can be difficult when a reader has a strong attachment to the original. The scene that seems optional to a screenwriter may be the moment a fan remembers most clearly. Conversely, a change that initially looks surprising may make sense once the audience sees how the movie builds its own momentum. Adaptations are often judged twice: first against the source and then as independent works.
Reinhart’s willingness to discuss those expectations is significant because it gives audiences a more realistic picture of the process. The film is not being presented as a filmed copy of the novel. It is a new version shaped by the limitations and possibilities of cinema. That does not eliminate the responsibility to honor the source, but it does clarify why some departures are unavoidable.
There is also a practical difference between the intimacy of reading and the shared experience of watching a movie. A novel allows readers to control the pace. They can pause, reread a passage or return to an earlier chapter. A film moves according to a fixed rhythm. Its creators must decide when a reveal happens, how long a moment lasts and how quickly the audience moves from one emotional beat to the next. What feels expansive in a book may need to become more focused on screen.
This is where an actor’s work becomes particularly important. When pages of internal material are reduced, performance has to carry more of the character’s meaning. A glance may replace an explanation. A change in posture may signal a shift that the novel describes directly. The screen version cannot rely on a reader hearing every thought, so the actor must help make the character’s inner life legible through action and reaction.
That responsibility exists alongside the pressure of audience expectation. Reinhart is not only interpreting a role; she is participating in a version of a story that readers already value. Her comments recognize that no performance can make every fan see exactly the character they imagined. What it can do is offer a sincere, specific interpretation that fits the film being made.
The conversation around The Love Hypothesis also reflects a broader reality in modern movie culture. Popular novels arrive with built-in communities, and those communities can be both an advantage and a challenge. They create immediate interest, but they also make the adaptation visible long before audiences have seen the finished work. Casting news, production decisions and comments about changes can all become part of the conversation. By the time the film arrives, many viewers may already have formed strong opinions about what it should be.
That makes clarity valuable. Acknowledging that material has been changed can help set expectations more honestly than promising a page-for-page recreation. It invites viewers to consider how the story has been reshaped rather than treating every difference as evidence that the adaptation has misunderstood the book. It also leaves room for the possibility that a movie can respect its source while taking a distinct creative path.
Ultimately, Reinhart’s message is less about dismissing the details readers love than about recognizing the realities of the medium. A feature film has to make choices. It has to decide which characters receive the most attention, which conflicts are central and which moments can be expressed visually. Some parts of the novel will make the journey intact, while others may be transformed or left behind.
Whether those choices work will depend on how they come together in the finished movie. Fans will be watching for familiar emotional notes, while newcomers will need a story that stands on its own. The adaptation will have to balance both audiences without becoming trapped by either one. Reinhart’s comments do not promise that every reader will agree with every decision, but they offer a reminder that change is not automatically a failure of loyalty.
The real test for The Love Hypothesis will be whether the movie captures the qualities that made the novel worth adapting in the first place. If it can translate the central relationship, preserve the story’s emotional pull and use the strengths of film rather than imitating the page mechanically, the changes may feel purposeful. Readers may still miss certain scenes or lines, but they may also recognize the heart of the story in a different form.
For now, Reinhart’s perspective gives the book-to-screen discussion a grounded note. The movie cannot contain everything, and it was never realistically going to. What it can do is make careful choices, trust the new medium and give audiences a version of the story with its own identity. That may be the most honest promise an adaptation can make: not that nothing will change, but that the changes will serve the film.
