That night when Vincent suggested her to go to a balcony, Katie never expected someone to accompany her last night in New York City. The last night in America.
But Kinsey was there. Unexpectedly, Katie could accept the man's presence with an open heart. She even let the man touched her and danced with her. They even went to the beach, which made them feel even closer.
Katie was attracted to Kinsey, and she felt that he had the same feelings as her. But she had to go to Germany. Katie had to find a way to stop her shortening age. It's just that she did not expect her feelings at that time to be deep enough to make her delay her departure.
Katie wished to try a relationship with Kinsey. That's why she decided to stay. Her high school friends also supported her and even enthusiastically saw the continuation of her relationship with Kinsey.