oh i absolutely love how you filled this prompt - to me, the song lyrics definitely added a stronger sense of sorrow/regret to the romanticism of the eeaao quote and you really captured such a complex sentiment so well. maybe love only lasts so long...

“I am,” Junhui responded, when Wonwoo took too long to respond. Quietly. Sharply, like the baring of teeth. Or a heart pricked too many times to count.

“I am happy.” Junhui repeated, but the gesture was hallowed out, worn thin. They watched another cycle started up, beating around and around again in circles.

such a poignant snapshot of a scene. i really like how you portray jun through wonwoo's pov but also offer glimpses outside of that, hinting at an exteriority that we don't fully get to see - but does it even matter, because there are hundreds of universes and wonwoo is wonwoo in all of them?
so glad someone picked up this prompt and built something so full out of it, thank you for sharing!