What tension exists between the young couple at the beginning of the story "Marriage is a Private Affair"?

At the beginning of the story, Nnaemeka has received a letter from his father saying that he has chosen a wife for him. Nnaemeka hesitates to tell Nene about the letter, creating tension between them because it concerns their plans to marry. The conflict is not about the wedding’s size or Nnaemeka waiting for his father’s blessing.

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