George and Lenny sat by the brush after the incident. They recited their "song" while they sat, manifesting their future together. George seemed as if in a state of comatose. All the while Lenny was, although a bit shaken up, quite gleeful.
George coaxes Lenny to look across the river. Acting as if you could actually see their little piece of land. As George pulls the Luger from his pocket the reader immediately comes to the realization of his plan. George raised the gun to the back of Lennys head.
George did what must be done. He put Lenny to rest peacefully so that he wouldn't be hung, locked up, or shot in the gut to die slowly at the hand of Curley and the other guys. Candy had said that he had wished that he had killed his dog instead of letting someone else do it. In a way George is candy and Lenny is the dog. George wouldn't let himself make that same mistake.