by thecuriousgeorge
You have to remember what you call your characters in part 2 John's wife was Susan
and she didn't allow anal play, now you call her Jane and she's able to take 4 fingers anally.
Confusing going from Susan to Jane. You need to make notes of what you call people, and what they like and do not like. If there a long delay between chapters, re-read them to refresh your memory