Jeremiah Fisher is a fictional character in The Summer I Turned Pretty, the popular Amazon Prime Video romantic drama based on Jenny Han’s bestselling novels. Played by Gavin Casalegno, Jeremiah is the younger brother of Conrad Fisher and one of the two central love interests of Isabel “Belly” Conklin.
Known for his outgoing personality, warm nature, and complicated romantic relationships, Jeremiah plays an essential role in the show’s emotional storyline. His journey explores friendship, jealousy, family expectations, heartbreak, and growing up.
Although he initially appears cheerful and carefree, his character becomes increasingly complex as the series progresses.
Who Is Jeremiah Fisher?
Jeremiah Fisher is one of the main characters in The Summer I Turned Pretty. He grows up spending summers at Cousins Beach with his family and childhood friends.
His relationship with Belly gradually develops from friendship into romance, creating tension between him and his older brother, Conrad.
| Character Detail | Information |
| Full name | Jeremiah Fisher |
| Portrayed by | Gavin Casalegno |
| Series | The Summer I Turned Pretty |
| Original author | Jenny Han |
| Father | Adam Fisher |
| Mother | Susannah Fisher |
| Older brother | Conrad Fisher |
| Love interest | Isabel “Belly” Conklin |
| First appearance | Season 1 (2022) |
| Final TV season | Season 3 (2025) |
Jeremiah’s emotional development is closely connected to his relationships with Belly, Conrad, and his mother, Susannah.
Jeremiah Fisher’s Personality and Character Traits
One of Jeremiah’s most recognizable qualities is his friendly and energetic personality. Unlike Conrad, who frequently struggles to communicate his emotions, Jeremiah tends to express his feelings more openly.
Several characteristics define his personality:
- Outgoing: He enjoys socializing and making others feel included.
- Affectionate: He openly demonstrates care for the people he loves.
- Competitive: His rivalry with Conrad sometimes affects his decisions.
- Emotionally vulnerable: Beneath his cheerful exterior, he struggles with insecurity and rejection.
- Impulsive: Strong emotions occasionally lead him to make decisions without considering their long-term consequences.
These qualities make him more than a typical romantic character. His strengths attract people, but his insecurities also create conflict.
Jeremiah’s struggle to feel valued independently of Conrad is especially important to understanding his behavior.
Jeremiah Fisher and Belly Conklin’s Relationship
Jeremiah and Belly share a childhood friendship shaped by summers at Cousins Beach.
As they grow older, Jeremiah’s feelings become romantic. However, Belly has long been attracted to Conrad, making their relationship complicated from the beginning.
Their Relationship in Season 1
During the first season, Jeremiah begins expressing his romantic feelings toward Belly.
Their friendship changes when they kiss, suggesting the possibility of becoming a couple. However, Belly’s unresolved feelings for Conrad complicate their connection.
Their Relationship in Season 2
Season 2 explores the consequences of the earlier love triangle.
As Belly reconnects with Jeremiah, their emotional bond becomes stronger. Eventually, she chooses to pursue a relationship with him.
By the conclusion of the season, Jeremiah and Belly are together, although their complicated history remains important.
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Jeremiah Fisher vs. Conrad Fisher
Jeremiah and Conrad have noticeably different personalities, contributing to their complicated relationship.
| Jeremiah Fisher | Conrad Fisher |
| Extroverted and sociable | Reserved and introspective |
| Often communicates feelings openly | Frequently keeps emotions private |
| Expressive romantic personality | More guarded romantic personality |
| Frequently seeks reassurance | Often handles problems independently |
| Struggles with comparison | Struggles with emotional communication |
Neither brother is entirely right or wrong. Their contrasting approaches to love and family responsibilities help explain why the romantic triangle becomes so emotionally complicated.
Their rivalry also extends beyond Belly, reflecting years of family expectations and unresolved tensions.
Jeremiah Fisher’s Family Background
Jeremiah’s family plays a major role in shaping his personality.
His mother, Susannah Fisher, provides warmth and emotional support throughout his childhood. Her serious illness and eventual death profoundly affect the family.
Jeremiah’s relationship with Conrad becomes particularly difficult as both brothers process grief differently.
Their father, Adam Fisher, is another important figure. Family tensions and perceived differences in parental attention contribute to Jeremiah’s feelings of insecurity.
The character’s family experiences demonstrate how grief can influence relationships, communication, and personal decisions.
What Happens to Jeremiah Fisher in Season 3?
Spoiler warning: This section reveals major events from Season 3 and the series finale.
Season 3 takes place after a time jump, with Belly attending college and dating Jeremiah.
Their relationship initially appears serious, but a revelation about Jeremiah’s involvement with another woman during a break in their relationship creates a major crisis.
Despite this, Jeremiah and Belly become engaged and begin planning their wedding.
However, their unresolved problems and Belly’s continuing feelings for Conrad make their future uncertain.
Eventually, the wedding does not take place, and the relationship ends.
In the final episodes, Jeremiah begins moving forward independently. His growing interest in cooking becomes a meaningful part of his personal development.
The September 17, 2025, series finale also shows Belly reconnecting romantically with Conrad rather than Jeremiah.
Jeremiah Fisher in the Books vs. the TV Series
Jeremiah originally appears in Jenny Han’s novel trilogy, consisting of The Summer I Turned Pretty, It’s Not Summer Without You, and We’ll Always Have Summer.
Both the books and television adaptation explore his relationship with Belly and rivalry with Conrad.
However, certain events and character developments differ between the versions.
In the third novel, Jeremiah and Belly’s engagement ends without marriage, while Belly eventually marries Conrad.
The television adaptation retains the central romantic outcome but changes elements of the characters’ journeys. In particular, Belly and Conrad reunite without an on-screen wedding in the series finale.
Who Plays Jeremiah Fisher?
Jeremiah Fisher is portrayed by American actor Gavin Casalegno.
Casalegno has also appeared in television productions including Walker and The Vampire Diaries.
His performance emphasizes Jeremiah’s confidence, vulnerability, and complicated emotions.
The actor’s portrayal helps distinguish Jeremiah from Conrad while maintaining the emotional connection between the brothers.
Gavin Casalegno appears throughout all three seasons of the Amazon Prime Video series.
Why Is Jeremiah Fisher So Popular?
Jeremiah has become a recognizable character among viewers because of his combination of confidence, warmth, and emotional vulnerability.
His friendship-to-romance storyline with Belly attracts audiences who enjoy relationships built on shared childhood experiences.
Meanwhile, his mistakes and difficult choices create opportunities for discussion about loyalty, honesty, and emotional maturity.
The ongoing debate between supporters of Jeremiah and Conrad also reflects the different qualities viewers value in romantic relationships.
Ultimately, Jeremiah remains significant because his story extends beyond winning or losing Belly’s affection. It also concerns developing an identity outside his family relationships.
5 Frequently Asked Questions About Jeremiah Fisher
1. Who is Jeremiah Fisher in The Summer I Turned Pretty?
Jeremiah Fisher is Conrad Fisher’s younger brother and one of Belly Conklin’s main romantic interests. He is portrayed by Gavin Casalegno in the Amazon Prime Video television adaptation of Jenny Han’s novels.
2. Does Jeremiah Fisher end up with Belly?
No. Although Jeremiah and Belly date and eventually become engaged, they do not marry. Their relationship ends in Season 3, and Belly ultimately reunites with Conrad.
3. How old is Jeremiah Fisher?
Jeremiah is a teenager when the series begins and is close in age to Belly. He becomes a college student as the story advances. His exact age depends on the point in the timeline being discussed.
4. Who is Jeremiah Fisher’s brother?
Jeremiah’s older brother is Conrad Fisher, portrayed by Christopher Briney. Their relationship becomes complicated because both brothers develop romantic feelings for Belly.
5. What happens to Jeremiah Fisher at the end of Season 3?
Jeremiah moves forward after his failed engagement to Belly. The final episodes explore his growing interest in cooking and his efforts to build an independent future while accepting changes in his relationships
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