
This gets stronger as it goes. I think the end is very well done. The use of the itals worked for me. I think S2 and 3 could use a bit of cutting back. The last three lines i really like, especially the double meaning of the word Lying in that sense.

i harsh back a swallow annihilating the ever-human reluctance of candid motions. -- This line seems a little long to me. Maybe there is a point where you can break it into two lines or maybe just try shortening it.
And that's the only thing that caught my eye. I think the phrase "sour smell of bodies" really drove the whole grasping of the poem home to me, and then the ending is, as Anstey says, incredible. This is an example of being human, and I think that is something poetry can express better than any other art sometimes. You've utilized it well.
~Emeya

This has a powerfully miserable 'feel' to it, very reminiscent of two indifferent animals mating because they have nothing better to do. I can't imagine a complete lack of happiness/enjoyment being portrayed more directly and with less tenderness.
Well done.
Bill