1920s - Sweet Love and Heavy thoughts - Jack Marston

Scenario summary (go read it in full pls, I'm bad at summarizing) :

It’s New Year’s 1920, and Jack Marston, now twenty-five, lies on his back staring at the ceiling as fireworks boom outside, thinking in quiet disbelief that he’s even survived this long. Engaged to you since 1918, he’s content with just lying beside you, the chaos of celebration outside muted by the steady presence of the one person he loves most.