How does Arthur Schopenhauer account for the preoccupation of art and literature with love-relationships?

How does Arthur Schopenhauer account for the preoccupation of art and literature with love-relationships? This essay should a argumentative with few references please. This work is for my final year BA German degree Level 6 Essay. I have enclosed my citation for your kind perusal. 01] Atwell, John E. Schopenhauer On The Character Of The World. Berkeley: University of California Press, 1995. Print. 02] Janaway, Christopher. Schopenhauer. Oxford: Oxford University Press, 1994. Print. 03] online source: http://thephilosophersmail.com/relationships/the-great-philosophers-arthur-schopenhauer/ 04] Youtube source: https://www.youtube.com/watch?v=q0zmfNx7OM4&feature=youtu.be