Peter Kavinsky and John Ambrose McClaren

Peter Kavinsky and John Ambrose McClaren’s relationship is an old middle-school friendship that survives into adulthood as warmth edged with competition. Their reunion brings back the easy shorthand of boyhood, but John’s renewed presence beside Lara Jean makes Peter’s unease visible: a shared past can still feel like a claim on the present.

A Friendship from Middle School

A photograph in Lara Jean’s graduation scrapbook preserves the friendship before it became complicated by adult choices. Found in a shoebox while Lara Jean and Kitty were clearing the attic to make room for Trina’s boxes, the picture shows the children waiting for the school bus on their first day. Peter’s arms are around John and Trevor Pike; Lara Jean stands linked to Genevieve, turned away from the camera as she listens to a secret. Beneath the image, Lara Jean has written “THE BEGINNING.” For Peter, the photograph is an unexpectedly intimate record of a time when John was simply one of his closest friends.

Peter later describes John as his “BFF back in middle school.” He recalls that others called the pair Butch Cassidy and the Sundance Kid, a nickname he turns into a small performance when John introduces Dipti to Peter and Lara Jean. Peter casts himself as Butch, “the main guy,” and John as the sidekick. The joke keeps their old friendship alive in the present, but it also makes their unequal roles a point of friendly competition: Peter claims the central place while John accepts the tease with good humor.

Reunion and Familiar Ease

John returns to the group during the gathering after Stormy’s memorial. When Lara Jean tells Peter that John has not yet chosen between Maryland and William and Mary, Peter answers that it is awesome, but his raised eyebrows and manner make clear that the news does not please him. The moment is brief, yet it establishes the tension beneath his polite response: John’s next step matters to Peter because it could bring him closer to Lara Jean’s future.

At the later gathering, Peter greets John with an enthusiastic shout and a familiar guy hug, pulling him in before they bump against each other. The welcome is real, not merely a display for others. Peter remembers their shared history readily, and he turns it into banter with Dipti, teasing John about being a bookish boy with “spaghetti arms” who has since become a “stud.” John replies that he still reads, and Lara Jean adds her own joke about once wondering whether Peter knew how to read. John doubles over laughing. In this exchange, the old friendship remains a source of comfort and comic intimacy, with John able to take Peter’s teasing without treating it as an insult.

Competition in the Present

The reunion also places Peter’s possessiveness in sharper relief. John tells Peter and Lara Jean that he is jealous of her admission to Carolina and may consider transferring there. Peter puts an arm around Lara Jean’s waist and proposes that they could all go to a Tar Heels game together. He sounds genial, but Lara Jean hears tension under the invitation. John hears it too, answering evenly before introducing his girlfriend, Dipti. The possibility of John joining their college world turns a casual conversation into a test of how much room Peter can make for an old friend who is also close to Lara Jean.

A smaller but telling contest centers on a carrot. Peter notices John eating one from the kitchen, while Lara Jean knows Peter has counted exactly how many carrots he needs for the rest of the week for his daily carrot-and-berry protein shakes. The object is trivial, but Peter’s attention to it gives his irritation a concrete outlet. His fixation is not really about the missing carrot: it accompanies John’s presence in the kitchen and his easy access to Lara Jean’s life.

Afterward, Lara Jean tells Peter that he acted like a jerk and that insecurity does not suit him. Peter rejects the description, insisting that he is not insecure about John and pointing instead to the stolen carrot. The denial and the disproportionate focus on such a small grievance make the rivalry legible without turning the friendship into outright hostility. Peter is still able to greet John warmly, joke with him, and include him in a possible game-day plan; he is less able to conceal how threatened he feels by John’s proximity to Lara Jean.

An Unresolved, Affectionate Rivalry

The relationship holds two truths at once: Peter and John have genuine affection, and their friendship becomes strained when old closeness intersects with Peter’s romance with Lara Jean. Peter’s jokes preserve their shared middle-school identity, while his reactions to John’s college plans, Carolina connection, and even the carrot disclose a competitive streak. John, for his part, responds with good-natured humor and does not openly challenge Peter, though he recognizes the tension. Their dynamic is therefore not a simple return to childhood friendship, nor a settled feud. It is a familiar bond under new pressure, still warm enough to invite laughter but unsettled by the possibility that John may again occupy a significant place in Lara Jean’s life.