In the epilogue, Belly has not heard from Conrad for two years, before receiving her handwritten letters from him 'each and every month' throughout the rest of her college years. She and Jeremiah, in the end, call off their engagement and break up for good after realizing they are not meant to be. Although Belly blows up at his confession, saying he was too late, her feelings for both brothers are called into question. Toward the climax of the novel, Conrad confesses his love for her. Because of this arrangement, her old feelings for Conrad, who is staying there as well, begin to slowly resurface. To prove his regret, Jeremiah proposes to her, which she hesitantly accepts however, a result of ongoing fights with her mother (who is furious with her for choosing to marry so young), she stays at Cousin's Beach.
She slaps him across the face and spends days in bed, crying. In We'll Always Have Summer, which chronicles their two-year relationship, Belly discovers at a frat party that Jeremiah cheated on her with a sorority girl. She then starts a relationship with his brother, Jeremiah, after he kisses her making his feelings known to her. She is known to have had a crush on her friend Conrad since she was young, but her relationship with him falls apart at the end of It's Not Summer Without You after the two become a couple for a short time. She is the daughter of Laurel and the younger sister of Steven.
For instance, in It's Not Summer Without You Belly explicitly disregards her mother's wishes and sneaks out of the house in order to try and convince Conrad to go back to school.
However, as the trilogy progresses, she deals with bigger and more life-altering situations, such as breaking up with Conrad, Susannah's death due to cancer, Jeremiah's betrayal, and ultimately marrying Conrad.
In the first book, Belly is more cognizant of what her elders, especially Susannah, want from her.