(Page 111)
"They lay there without words. Moving all over her chest and arms and armpits and stomach as if placing mines on her with his mouth and then leaned up and looked at her body glistening with his own spit. Together closing up her skirt, slipping the buttons back into their holes so she was dressed again. Not going further because it was friendship that had to be guarded, they both wanted. The diamond had to love the earth it passed along the way, every speck and angle of the other's history, for the diamond had been earth too."
We can infer based on the first sentence, that either they dont have the trust to have a conversation or they have a lot of it, therefore being able to have a good time in silence. The description in the second sentence supports the second idea since they are having an intimate moment as he kisses her body.The word "together" has a lot of meaning since it shows they are a team. Somehow they are two in one. They do this together letting us infer that both of them wanted to do what they did. Nevertheless, the next sentence talks about friendship. It seems like this is something meaningful for both of them so since they want to keep it that way, they wont do anything more even though they are tempted. We can infer they are tempted due to the use of because. This lets us see that there is a reason why they wont go further. The closure of the paragraph is a metaphor. It compares their relationship to a diamond and earth, and since they used to be only one, they now have to love each other in some way.