With Time (слэш)

Heats weren’t what they used to be. Anymore it was like a low-grade itch, sometimes one that Sherlock didn’t even know needed scratched until John happened across it. Sometimes it was nothing more than a few moody days where Sherlock was a tetchy sonofabitch, being extra snappish and fussy until John looked at the calendar and said ‘ah’ and took Sherlock to bed. Sometimes, he’d be the one to catch on first. When that happened, it was more like it used to be. More seduction. More ‘come-take-me-to-bed.’ A spark, sometimes. A spark.
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For BakerStMel on Twitter, who purchased this through the Fandom Trumps Hate auction. Mel asked "What would omegaverse be like as they got older?" and I was like "Wow, that's an interesting question." So here is some early retirement-age Sherlock and John, learning what life is like post-andropausal.