ten rules to follow to ensure her happiness: At a café, instead of coke or juice order a coffee Prevent her from over-drinking Give in to her at every circumstance When she hits you pretend it hurts when it doesn't and vice versa Surprise her with a rose on the 100th day anniversary Make sure you learn Kendo and Squash, and more. While the blind date recites these rules to her, she realizes how well Gyeon-woo understands her and realizes her love for him. She abruptly leaves her date and searches for Gyeon-woo at the subway station. They cross paths several times, but never run into each other, so she goes into the subway security office to see the security monitors. She sees him standing close to the edge of the platform (just like she was in the beginning). While an employee makes an announcement in the microphone, she yells his name; he hears and they re-unite at the office. Once reunited the two realize they are at a turning point in their relationship, but, for some unknown reason, the Girl decides it is time for them to part. As a gesture to their happy times, the two write letters to each other and bury them in a "time capsule" under a particular tree on a mountain in the countryside. They agree to meet again at the tree after two years to read the letters together. After burying the "time capsule" they go their separate ways for good. Overtime During the two-year span, Gyeon-woo works hard to improve himself; he practices kendo and squash and learns to swim. To pass the time, he also began writing about his dating experiences with the Girl on the internet as a means to cope. His stories gain so much notoriety that he is approached by movie producers to turn his letters into a movie; he is ecstatic because the Girl's life-long dream was to have one of her screenplays made into a film. He so desperately wants to share this news with her, but chooses to wait until they agree to meet. Two years have passed and on the agreed date, he travels to the tree on the mountain-top, but the Girl does not show up. He comes day after day without opening the time-capsule in hopes that she would appear, but she never does. Eventually, he opens the time capsule and reads