Complex sentence: The word tenderness itself is disputed as it is never clearly defined but is implied to be the struggle between love, lust, and the need for both, though it later becomes clear the definition of "tenderness" is quite different to both Eric and Lori.
Split into simpler sentences: The word tenderness itself is disputed as it is never clearly defined but is implied to be the struggle between love, lust, and the need for both. Though it becomes clear, later in the book, that the definition of "tenderness" is quite different to both Eric and Lori.