Ron and Hermione's Strife
Harry Potter and the Half-Blood PrinceRon's relationship with Lavender strains his friendship with Hermione, leading to arguments and a temporary rift before they reconcile.
increasing
Bearing strength in each event
decreasing
The First Kiss

The Beginning of Troubles
The Spark
Ron Weasley, exhilarated by his success as Keeper, attracts the attention of Lavender Brown. They begin a public relationship, kissing frequently. Hermione Granger becomes jealous and hurt, although she tries to hide it.
The Conflict
Ron and Hermione begin to argue. Hermione criticizes Ron's behavior, while Ron accuses her of being bossy. Harry is caught in the middle. The atmosphere in the Gryffindor common room becomes tense.
The First Big Fight
During a Charms lesson, Hermione laughs at Ron's failed attempt to change his eyebrow color, and Ron retaliates by imitating her. Hermione storms out, crying. This marks the start of a prolonged period of silence between them.
The Poisoning and Reconciliation

The Turning Point
The Crisis
Ron is poisoned by the mead meant for Dumbledore. He is hospitalized, and Hermione is deeply worried. She visits him frequently, and their animosity fades in the face of his danger.
The Apology
When Ron wakes up, he is still distant from Hermione, but the incident softens his heart. He breaks up with Lavender, realizing he does not love her. Hermione begins to forgive him.
The Gradual Reconciliation
Over the following weeks, Ron and Hermione slowly rebuild their friendship. They talk more, and Ron admits that he missed Hermione's company. By the end of the term, they are on good terms, though not yet ready for a romantic relationship.
The Final Goodbye

The Promise
The Decision
After Dumbledore's death, Harry decides to leave Hogwarts to hunt Horcruxes. Ron and Hermione immediately declare they will go with him. Their friendship is stronger than ever, and they are united in their purpose.
The Commitment
Ron and Hermione's relationship is now solid. They support each other and Harry. The three friends prepare to face the unknown together. The rift between Ron and Hermione is fully healed, and they are ready to face the dangers ahead.
The New Beginning
Ron and Hermione's bond is now one of deep trust and love. Although they have not yet confessed their feelings, it is clear that they are meant to be together. Their journey into the unknown begins with a shared commitment.
early September, after the Quidditch tryouts
late February, after Ron's birthday
late June, after Dumbledore's funeral