This book exists in parts and I bought part one as a freebie and found it really good. It was funny, the characters were nice, the couple was in love and cuckolding was, even if too fast, at least smoothly introduced at the end.
So I took a chance on the entire book and was strongly disappointed. It is mostly a pretext for sexual encounters with bulls. The set-up remains sympathetic because they role-play a lot but it is was too much for me. But the book entitled book one was really cool.