Propose (1997)

Jung Soo-bin has been secretly in love with Kim Yu-ran, a close friend of Yuran, and as time goes by, Yuran feels a warm affection for Jung Soo-bin, who falls in love with a man named Min-seok. While traveling abroad, Min-seok tells Min-seok that he is an illegitimate daughter, and Min-seok promises not to abandon her because of this, but Min-seok's actions show that he cares about her. Feeling unrecognized, Yu-ran leaves Min-seok in sorrow and returns to Su-bin's side, but only when Yu-ran tries to ask Su-bin for warmth. There's another girl next to Xubin.