She didn't fall in love with the boy when she first met him. The boy pursued her fanatically, and by some strange combination of circumstances, she promised to be with him in college.
After college, the young man had many romantic relationships, but he was ambiguous because she rejected him.
She thought it was a love that would allow her to successfully enter into marriage, but various factors hindered her and the boy...
Concept: A love caused by an accident