How does the bond between Gilgamesh and Enkidu affect the story in The Epic of Gilgamesh?

After
defeating Enkidu in a wrestling contest, Gilgamesh and Enkidu become very close friends and
companions (theirs is the dominant relationship which runs across the story). Do not overlook
that most of Gilgamesh's early adventures and triumphs are accomplished with Enkidu at his side.
Together they take on Humbaba, and it is Enkidu who convinces...