Ariane

Konstantin abandons Ariane because that was always his intention from the beginning. He made it clear to her at the opera that he would only be staying for a short time before leaving on a journey and never returning. For Konstantin, the holiday was simply a fleeting affair, not a serious relationship. He treats it as a casual encounter rather than a meaningful commitment, which is why he leaves without hesitation or remorse.

Earlier at the opera, Konstantin explicitly tells Ariane he will leave one day and never return, establishing his intent from the start.

Konstantin is being honest about his transient nature and his intention not to stay in any relationship long-term. He presents himself as a bon vivant who enjoys brief romantic encounters without attachment. By warning Ariane upfront, he both protects himself from emotional commitment and establishes clear boundaries for what he views as a short-lived affair.

Ariane pretends to be a seasoned adventuress because she wants to impress Konstantin and appear worldly to the sophisticated older man. She is young, shy, and genuinely naive, but she fears he will not take her seriously or find her attractive if he knows her true lack of experience. This game of pretense is her attempt to level the playing field and win his interest.

Konstantin returns to Berlin because he cannot shake his feelings for Ariane, despite having left her. His return suggests he has realized the connection was more meaningful to him than he initially admitted. When he arranges another meeting with Ariane, it becomes clear that his feelings have deepened and he wants to reconnect with her.

Ariane's plan for revenge falls apart when she confronts Konstantin because her genuine feelings override her desire for vengeance. In the heated argument, she cannot contain her emotions any longer and confesses her love. This moment reveals that beneath her hurt and anger, she still loves him deeply, and the emotional confrontation forces her to abandon her revenge plot in favor of honesty.

Ariane's earlier thoughts of revenge in Berlin show her conflicted feelings, she wants to hurt him but also still cares for him.

Konstantin lifts Ariane onto the train because he finally decides to commit to her rather than let her go. As Ariane's strength is nearly spent from trying to keep up with the moving train, Konstantin makes a decisive choice to act. This gesture represents his acceptance of a shared future with her, marking the moment he chooses love over his previous pattern of leaving.

Ariane's decision to end the chapter with Konstantin and say goodbye signals she is ready to move on, which appears to trigger his change of heart.

Konstantin's feelings evolve when Ariane confesses her love during their heated confrontation. Her raw honesty about her true feelings makes Konstantin finally understand the depth of her emotion and the impact his departure had on her. This moment of vulnerability from Ariane breaks through his defensive exterior and makes him realize he cannot lose her.

Ariane follows the moving train because she cannot bear to watch Konstantin leave her again. Despite having decided to end their chapter and move on, her love for him proves stronger than her resolve. When the train begins to move, she instinctively runs after it, unable to let him go without a fight. It is this desperate act that prompts Konstantin to make his final decision to pull her aboard.