Lots of fun revisiting this one :) Since I know you appreciate honesty, one thing that takes me out of the story a little (although it's at the beginning, so I got right back in) is the amount of alcohol they consumed. Seems a bit excessive. Maybe that's just me, though.
He sucks on the spot just below her ear, the spot he knows is her weakness, and she is gone. He follows her and they press their mouths against each other’s shoulders, leaving damp circles on cotton shirts, to stifle the sounds of their groans. Hot the first time I read it and still hot now.