I am looking for stories where a person has sex with themselves via time travel.
You might try Loophole
You could make the case that this also takes place in Once More With Feelings, though there's a catch, there.
Oh, and there's a John Varley short story that involves someone having sex with themselves, but there's no time travel involved. I don't remember the name of the story, though.
You could make the case that this also takes place in Once More With Feelings, though there's a catch, there.
While it has been a while since I read that story, I recall the catch.
https://storiesonline.net/s/71437/a-second-chance-to-make-it-right
Has a similar set up. Redo starts in his sister's body.
For me, a Re-Do done right requires rebuilding your life in the body you've gotten, not continually switching one in for another. Again, those stories are intriguing and hard to put down, yet I prefer following a single theme through to the end, while a scattershot approach is more frustrating than rewarding.
The dead tree short story 'All you Zombies' by Robert Heinlein.
The science fiction film Predestination (2014), based on that story, was the inspiration for my question.
I ran across that on streaming the other day and started watching it without knowing what it was. I recognized it about as soon as the scene in the bar started, though. I think it would have been better if I hadn't.
where a person has sex with themselves via time travel.
Hmm, if it's real time travel in the conventional sense where the time traveler gets transferred into the past – no body swap or changed gender – then the sex with themselves would be homosexual. Either gay or lesbian, depending on the gender of the time traveler.
This scenario wouldn't get me interested apart from how the author handled the memory paradox.
A male time traveler having incestuous sex with a female relative (mother, aunt, grandmother, great-grandmother, great-great...-great-grandmother) who is now the same age or younger than he himself would have far more possible outcomes than the standard mother/son, grandmother/grandson scenario and avoids the age difference problems.
There are some stories with this scenario, e.g Lazarus Long having an affair with his mother Maureen when his younger self was a little kid.
Then a short story (don't remember the exact title) "How I became my own grandfather".
A similar story here on SOL about the MC getting involuntarily transferred back in time, meeting his great-grandfather and eventually marrying one of the daughters. I think she was his grandaunt, so he became his own granduncle.
HM.
Then a short story (don't remember the exact title) "How I became my own grandfather".
That doesn't require either time travel or incest.
https://www.youtube.com/watch?v=eYlJH81dSiw
https://storiesonline.net/s/20967/a-matter-of-timing
A short story with a similar theme.