You Promised Me a Wedding, but You Gave Me Green Tea

Fang Luo and Li Xue were originally a couple and were about to get married. However, Li Xue's cousin Lu Cha got terminally ill and only had three years left to live. Lu Cha once saved Li Xue's life. In order to repay his kindness, Li Xue decided to marry Lu Cha. "Fang Luo, wait for me for three years. After Lu Cha leaves, I will marry you!"