No no no no no. I don't mind erotica, or kind of weird kinks in books, and I even understand the "oh, older guy, so attractive" thing, but... the father of your bf? uhm... no. Especially not, when you pull the bf into your sex life, by constantly openly comparing the two!!! there is literally a scene where they talk about his son and her ex whilst having sex and get off on it! also... it does not seem like a healthy relationship, the age difference is just a bit too big and they have very different expectations for each other I think. I really couldn't get into it.