One day, Kim Chunchu went to Kim Yushin's house for a game of "Gyeokgu" (격구, traditional Korean polo). During the game, Kim Yushin deliberately tore off one of the tassels on Kim Chunchu's robe. Kim Yushin offered to have it sewn by one of his sisters; he then sent for Bohee to have it mend, but she was too nervous to come into the presence of a stranger, and politely refused by saying that "she cannot do something so small for someone so precious". Munhee stepped out and offered to sew it instead. When they met, Kim Chunchu and Munhee fell in love with each other. Kim Chunchu started to visit Munhee more often, but Kim Yushin pretended not to be aware of their relationship. Eventually, Munhee became pregnant, however, Kim Chunchu decided to keep it a secret in fear of causing trouble since he was already a married man. When Kim Yushin found out about it, he scolded his sister severely, then ordered their servants to spread the rumor of his sister's pregnancy and that he might kill her because of it in a plan to pressure Kim Chunchu into marrying his sister.