I believe it was called teaching in Ashton . It’s about a wife and husband move to a new town where everyone is a bit more open . The wife is a teacher and slowly it becomes normal for her to get groped end up naked and giving blowjobs. Also the author released new additions to this story very recently.
Source: reddit.com/r/eroticliterature/comments/ub0pry/looking_for_a_story