The first gay couple in recorded history lived in Ancient Egypt in the year 2400 B.C.

Two (male) royal manicurists named Niankhkhnum and Khnumhotep were found buried together in a shared tomb similar to the way married couples were often buried. Along with that are hieroglyphs combining their names together to say “joined in life and joined in death”. Strangely enough, Niankhkhnum actually did have a wife, but in most of the artwork in the tomb she has been replaced with Khnumhotep.
(source)