I have been hunting around for clarification on something. Is sex between in-laws (ie. family by marriage rather than blood) required to go in ? The examples that I've found are generally not (they seem to show up mostly in ) so I'm thinking not but I haven't found any kind of official ruling on it. I have a new story taking shape involving an affair between a man and his daughter-in-law, who was abandoned by his son and has started on getting a divorce. I just want to make I categorize it correctly when I submit it.