i think the last stanza is fine. especially the last line, because it makes me think of the kiss of death. so i wouldn't change it at all.
this was a very interesting piece. i like the second stanza:
"her body is corruption but she kept me wanting more and now-contamination leaving my body useless and sore"
it's kind of on that whole you know something is bad for you, but it feels so good, so right and you just don't wanna let go of it. think a lot of people can relate to that. i love the title as well, i think it pretty much sums up the content of the poem (even though you make no direct reference to satan). all in all, this was great. good job. ...bb...