[Child of the 7th Age]

Look in the History of Middle-earth vol. 10, entitled Morgoth's Ring, which contains a chapter called Athrabeth Finrod Ah Andreth (the Debate or Converse between Finrod and Andreth) where reference is made to the mortal woman loving Finrod's brother Aegnor.

It is a poignant tale, filled with sadness and even some bitterness on Andreth's part. Their conversation gets into many questions about the nature of Man and Elf, the possible meaning of the Gift of Eru, and how that differs from Elvish immortality. The two even discuss the possibility that Eru himself may someday come within Arda to help begin the healing process.

Written near the end of Tolkien's life, this piece gets into questions that aren' mentioned anywhere else. These were the type of philosophical speculations that Christopher comments on as being "out of sync" with what came before in Tolkien's writings. Personally, however, I find them fascinating!