Strontium Chloride Red and Other ColoursI can almost guarantee you this will be my only rec for this pairing (outside a reiteration that the 5 pieces hils rec'd yesterday were all fun!). I prodded
bluemeridian's recs, and kept passing on things because they sounded dumb, or tedious, or too much trouble. Since I know she is an excellent and reliable rec'er, I think I my interest in this idea is already fading.
However! The above is actually sort of a Sherlock rec, actually. Q is cast as the youngest of THREE Holmes brothers, and the three of them spend a fair amount of the story texting. Beware major spoilers for BBC Sherlock - I think this story is set between the second and third seasons.
(Please note there is no warning on the story for Q's untreated eating disorder, though you could classify it as similar to Sherlock's cocaine use - Sherlock uses drugs to distract from boredom, and doesn't care about them so much when he's busy. Q uses hunger as a tool to ground himself in the humdrum of real life, from which he finds himself almost completely detached. In the end his relationship with Mr. Bond seems to be curing that detachment, and maybe the eating issues will be set aside. Anyway, just fair warning if that's a problem for you.)