Jules Caine

Jules Caine, Jackson Caine’s twin sister and a doctor, is both a close family presence and a supporting figure in the novel’s intertwined relationships. Her hesitation about marriage is shaped by the upheaval of her parents’ divorce, while her eventual acceptance of Carter’s proposal shows her choosing commitment despite that history. She also becomes a practical source of care for Emily Wade, especially when Emily’s pregnancy and accident make Jules’s medical knowledge consequential.

Identity and Background

Jackson identifies Jules as his twin during a dinner conversation about his own life. He is thirty, and the exchange makes clear that the twins share a birthday, which has already passed. The detail establishes Jules as more than a sibling mentioned in passing: she is Jackson’s closest family counterpart, present in his everyday life and in decisions that unsettle him.

Jules is a doctor who works shifts at a hospital. The text gives little further account of her professional life, but it shows her medical role directly: when Emily says she has been feeling sick, Jules offers to check her, explaining that she is a doctor. Her work thus enters the story not as background decoration but as a form of knowledge Emily can turn to privately, before that knowledge becomes urgent in the aftermath of the crash.

Family History and Fear of Marriage

Jules’s reluctance to marry Carter is rooted in what she and Jackson experienced as children. When their parents announce that they have reconnected, Jackson recalls the years after their divorce as a period of shuttling between households, name-calling, fights, and successive stepmothers and stepfathers. Jules does not supply a separate account of those years, but her warning that marriage changes people gives the shared family history a personal consequence: the prospect of repeating a family pattern frightens her.

Before her engagement, Jules tells Jackson that Carter proposed the previous night at the hospital, between shifts. Carter understands the way they grew up and has told her he does not need an immediate answer. Jackson calls Carter a good man and advises Jules not to marry if she does not want to; if Carter could not accept that, Jackson suggests, he might not be right for her. Jules answers that she loves Carter but that marriage scares her. Her concern is not presented as a lack of love for him. It is the fear that a formal commitment might alter the bond they already have.

That fear surfaces again when Jackson and Emily accompany Jules and Carter to their mother’s townhome. On the way, Jules asks Jackson whether he is ready for what is coming. When their parents describe putting the past behind them and moving forward together, Jules says she is not sure about the reconciliation. Her response keeps the family history present even as her parents frame their reunion as a new beginning; for her, their renewed relationship cannot erase what the divorce meant to their children.

Relationships and Care

Jules and Jackson share easy, affectionate familiarity. She arrives at his home the morning after his birthday has passed, greets him with a kiss on the cheek, and accepts his offer of coffee. Later, she comes to his home and eats food prepared there. These domestic moments place her within his ordinary routines, while their conversations show that he is someone she trusts with her doubts about Carter and her parents.

Jules also takes Emily’s needs seriously. During a conversation about the terms of Emily and Jackson’s companionship contract, Jules points out that a schedule focused on weekends could leave Emily unable to spend time with her friends. Emily recognizes the problem and calls Jackson to amend the agreement. Jules’s contribution is brief but concrete: she notices a cost the couple’s negotiations have not accounted for and prompts Emily to protect time for a life beyond the arrangement.

Her care for Emily becomes more intimate when Emily has been feeling sick. Jules offers a medical check, but Emily attributes the symptoms to nerves over her separation from Jackson and asks Jules not to tell him. Jules agrees, adding that Emily should come to her if the symptoms persist. When the accident brings Emily to the trauma room, Jules tells the medical team that Emily is pregnant. Jackson is shocked; Jules explains that Emily had come to her because she was sick and planned to tell him after returning from Montauk. The sequence presents Jules as both confidante and doctor: she respects Emily’s request for privacy while Emily is safe, then gives the emergency team crucial information when Emily cannot do so herself.

Engagement and Change

Jules’s position shifts from fear and uncertainty to an affirmative choice. At a later gathering, she tells Jackson and Emily before making a wider announcement that she has said yes to Carter and that they are engaged. She holds out her hand to show the diamond ring, and Jackson embraces her before congratulating her. The gesture marks a change in her circumstances, not a claim that her earlier worries have vanished: the novel gives her a way to accept Carter without suggesting that her childhood concerns about marriage were unfounded.

Six months later, Jules and Carter are planning their wedding, which is expected to take place in a couple of months. Her engagement therefore develops into an intended marriage, while the narrative leaves the wedding itself in the future. This endpoint gives her arc forward movement without supplying a resolution to every question she raised about how marriage might change a relationship.

Narrative Role

Jules’s choices form a useful contrast with Jackson and Emily’s early effort to manage intimacy through explicit rules. She worries that marriage could change a relationship, while Emily and Jackson initially negotiate the terms of a non-romantic companionship; in both cases, commitment is treated as something with real consequences rather than as an automatic happy ending. Jules ultimately accepts engagement, but her doubts remain legible beside that decision.

Her role also links family history to present-day care. She is wary when her parents reconcile because she remembers the instability their divorce brought, yet she is able to support Emily through a private medical crisis and then speak up when the pregnancy must be known. The novel gives Jules fewer independent scenes than the central couple, but the scenes it does give her establish a distinct presence: a twin and confidante to Jackson, a cautious partner to Carter, and a doctor whose intervention matters when Emily’s private circumstances become an emergency.