Yun and Jack met each other while attending school at the United States Naval Academy. They were both members of the 25th Company and Jack was even Yun's squad leader for two different semesters! Several months before Jack's graduation, he and a friend began planning a trip to Europe. Yun, also planning a Europe trip to visit old friends in Germany, caught wind of this and asked to tag along for the first part of their journey. Who could say no to spending a little time with Yun? Jack and his friend, of course, obliged. Immediately after graduation, it took a few days being stuck in Maryland to finally get seats onboard a military standby flight to Ramstein Air Base, Germany but the trio made it.
Those few days Jack got to spend with Yun before the flight were enough for a big crush to develop. Jack and his friend spent the night at Yun's friends' house in Germany. The next morning, the guys split off from Yun and traveled westward towards France. Jack felt a mysterious emptiness once he left her. He quickly learned that he could not live without her once their European adventures took separate paths. Once back in the states, Yun and Jack continued to communicate with each other. They got to spend quite a bit of time together during the rest of the summer and a beautiful love had bloomed!