Those Years, These Years

At the age of sixteen, when she was in high school, she was arranged to be his deskmate. From then on, her fate changed, but she told him that she never regretted falling in love with him. In college, some misunderstandings separated them. When everything became clear, he went to find his lost love... However, she was married to another man, and he hated her. Didn't he just say that he would only love him for the rest of his life? How did it become The mother of a three-year-old? How strong is she when she faces the storm when her husband learns the child's secret? And he was kept in the dark about all this. When his former friends told him the truth, what choice should he make?