What is the relationship between Okeke and Nene in Chinua Achebe's "Marriage is a Private Affair"?

In 's
short story, "Marriage is a Private Affair," Okeke is Nene's father-in-law, who
refuses to have anything to do with her after she married his son, Nnaemeka. Nnaemeka is a young
Igbo man from the country, who travels to Lagos, where he meets and falls in love with Nene.
Nene hails from the cosmopolitan city of Lagos and laughs when Nnaemeka tries to explain to her
how upset his father will be that he rejected traditional marriage customs and got engaged. When
Nnaemeka travels home to tell his father, Okeke, that he is engaged to a woman named Nene, Okeke
is deeply hurt by his son's decision and shuns him for eight years. Okeke even refuses to accept
Nnaemeka and Nene's wedding photo and sends it back to them mutilated. After eight years of
marriage, Nene writes a letter to her father-in-law asking him to allow Nnaemeka to bring their
two sons to visit him. The story ends on a positive note with Okeke thinking about meeting his
grandsons for the first time and experiencing a change of heart.