Father and Daughter... But Not

[Fuumayami]

So the idea is an "incest" story where the Dad (41) and Daughter (19) are infatuated with each other, but never took the initiative to go further. For me, Daughter is the one who wants to go further while Dad is pushing back even though he wants to too.
Then the bombshell reveal, they aren't biological Father and Daughter! Mom had a one time affair and never told them. Now with this new revelation, Dad's desires for "his daughter" is unchained.

For the reveal, I'm thinking that the daughter wanted to get into the history of her ancestry and took a DNA test or something. She finds out that she's not related at all to her Dad and confronts Mom. She wants Mom to tell Dad the truth.

Thoughts? I don't think I've seen a story like this? Idk if it'll work because it'll be a story where you read about the father who's in turmoil with his feelings. His daughter is seducing and teasing him with her sexy young body and he wants to give in but doesn't want to because the taboo of incest. Then he essentially gets a cop out in the conclusion, "That's not my real daughter. I'm gonna fuck her now!" Idk would this be interesting?

 

[sirhugs]

I'd bet something like this has been done, but that is no reason not to put your own spin on it...
I think the "interesting" is in the writing.