Unforgettable (1969)

When Su-mi receives a one-way ticket out of town from her boyfriend, Kyeong-min, she is crushed. She attempts suicide, but is rescued by Dong-won. Dong-won thinks he can help her by marrying her. Meanwhile, Kyeong-min is accused of murder and begins losing his vision. Su-mi learns of his problems and donates one of her eyes to him. Dong-won must decide whether or not to release Su-mi from her wedding vows.