He Married Herself

In the year 2019, a woman had  a sex change.
Then he traveled back in time and what happened was strange.
He and his former female self got married after having a relationship.
When I learned what was going on, it was hard for me to get a grip.

After having the sex change, he grew a beard.
When I saw him kissing his former self, it was weird.
Just thinking about the situation brings a chill to my bones.
I have a question, is this reality or is this The Twilight Zone? 

(I got the idea for this poem from something that I saw in a video game.)