Most of christianity's horror of sex, and a lot of it's misogyny, is tracable to the Pauline/Augustine horrors of around the 300 or 400s. In fact it doesn't really establish itself properly until the Celtic church loses power entirely in about the 900s - I forget the exact dates - and Rome imposes celibacy (hah!) in the 1000s-1400s or so. (Do the eastern churches share the fear and disgust or is it restricted to a don't-do-it-outside-marriage-enjoy-it-once-married type thing like in Islam?)