[F4M] My BF's father [cheating, older man/younger woman, teasing, seduction) (input requested)

Hi everyone! Hit a wall with this particular story and I am not sure where to take it. The obvious is that she seduces her bf's dad - but how? Does the son find out? Watch? Or does the father coach the young couple? Input welcome!

**Everyone depicted/Described in this audio is an adult, this audio is for adults and is fantasy**