'unlike Gatsby and Tom Buchanan, i had no girl whose disembodied face floated along the dark... so i drew up the girl beside me... her wan, scornful mouth smiled and i drew her up again closer, this time to my face.'
Lexical focus removing any sense of self from Jordon / women ('mouth' 'disembodied face') dehumanises her into an object of male pleasure.
Double pre-modifiers = coldness
Nick claims he does not idolize Jordan, but he rather dehumanises her.