I wrote Batman/Superman fanfiction.
Here is the summary:
When a charity gala turns into Gotham’s most talked-about scandal, Bruce Wayne and Clark Kent find themselves at the center of a headline they never meant to make. After Clark blurts out “We’re married!” to a pack of gossip reporters, the world believes the billionaire and the reporter have secretly tied the knot.
What begins as accidental PR chaos spirals into a city-wide spectacle—photo shoots, interviews, Justice League teasing, and one very sarcastic note from Lex Luthor. Bruce tries to manage the crisis with grim precision; Clark finds the humor in it all. Somewhere between the fake smiles and public appearances, the truth of their relationship starts to shine through.
The Wayne Gala Incident is a romantic comedy of secrets, tuxedos, and accidental honesty—where even the World’s Greatest Detective can’t outthink love, and Superman proves that sometimes the fastest thing in the world is falling for someone twice.
You can read the story on fanfiction archive here:
https://archiveofourown.org/works/72904011