More recent examples of SM/WW being chosen to represent people's own relationship:
"Keion and Melissa - two superheroes destined to... share their love for eternity!!! 😬 One of the most unique ideas ever pitched to us by a client and they absolutely loved it! #superheroweddinginvitations"
https://www.instagram.com/p/B1H7IWah5WN/
"I spent close to 3 days working on this photomosaic for my wedding this Saturday. As you can guess our theme is Superman & Wonder Woman. Here's to hoping @simplyneryluz likes it. 🤞🏼"
https://twitter.com/Cuban_Superman/s...40063858675712
"You'll always be my Wonder Woman"
https://www.instagram.com/p/B1IfElWlTuf/