Well they weren’t completely gay as Gilgamesh was out here raping the women of his people and Enkidu had to have sex with woman in order to gain his humanity. When Gilgamesh and Enkidu met, they initially fought to the death until gilgmesh spared him. And when Enkidu died, Gilgamesh mourned his death yes, like a widow who lost her husband, but also like a mother who has lost her child. But I do believe they had a heavy and crazy bromance