SEONGNAM: The hotel ballroom was filled with pink balloons, the sound of love songs and 100 singles gathering for a night of wine, getting acquainted and - fingers crossed - romance. Before one knew it, five hours had flown by at the mixer for 50 men and 50 women, held in a city just outside Seoul. Playing matchmaker was none other than the city government. A growing number of cities across South Korea are sponsoring blind-dating events such as these for singles, desperate to prod young adults onto...