Let any doubters of gilgamesh and enkidu's love story (or the capability of past humans to be gay in general) read tablet 12 lines 86-101and try to find a straight explanation (its not possible):

Gilgamesh opened a hole to the Underworld

and brought Enkidu's spirit back, like a ghost.

They hugged, they kissed,

they talked, they asked:

"Tell me, my friend, tell me, my friend,

tell me the laws of the Underworld you saw!"

"I will not, my friend, I will not.

for if I tell you the laws of the Underworld I saw,

you would break down crying!"

"So let me break down crying!"

"My friend, my penis, which you touched to please your heart,

is being eaten by a moth, like a threadbare cloth.

My friend, my crotch, which you touched to please your heart,

is filled with dust, like a crack in the ground."

"Woe," cried the king, and threw himself in the dust.

"Woe," cried Gilgamesh, and threw himself in the dust.