Love has been celebrated in song, dance and literature since humans set foot on Earth, but because nothing was put in writing for a while, the world’s oldest love poem only dates back to 2025 BC.
The poem is the celebration of a ritual that took place each Mesopotamian new year, an event that took place around the Spring Equinox. It was written on the tablet found for King Shu-sin (2037-2029 BC), the fourth ruler of the Third Dynasty of Ur. The 29 lines are written in Sumerian and celebrate the sacred marriage between the Sumerian king and the Sumerian goddess of love and war, Inanna.
The tablet on which the poem is written is housed at the Istanbul Archaeological Museum in Turkey, and its details are here.
English translation and tablet details at Istanbul Museum of Archaeology: http://www.istanbularkeoloji.gov.tr/web/30-127-1-1/muze_-_en/collections/ancient_orient_museum_artifacts/the_oldest_love_poem
“Inanna and the Sacred Marriage” by Johanna Stuckey: http://www.matrifocus.com/IMB05/spotlight.htm
Picture and another English translation: http://mristanblue.wordpress.com/first-love-letter-of-the-world-istanbul-archaeological-museum/