I want to do a Daddy daughter story.
My idea is this:
I am 17years old and my father is 40. He married my mother at an early age and they are very in love but she is terminally ill and unable to fulfill her wifely duties for about a year now. She will die soon and the daughter and her father are spending more and more time together to try and comfort one another. The daughter looks like her mother and the father drinks a little to much one night and behaves inappropriately with his daughter and they both find that it is not unwelcome for either of them. You get the idea, the daughter is a virgin when the affair starts. So it could be written very well.
If you are interested in being my Daddy PM me and maybe we can work something out.