Thorin and Bilbo

I had this alluring idea after reading a short fanfic where Bilbo, after Battle of the Five Armies, stumbles upon Thorin deep down in the forges of Erebor helping out as a blacksmith; and of course, the poor hobbit is fascinated by all this sweaty, bulging muscles
The story is called "Burn and Shiver" and was written by PsychicPineapple. You can read it here: archiveofourown.org/works/3294…
Oh, and by the way: the Khuzdul on Thorin's biceps reads "King under the Mountain" and the tattoo on his ribs says "Bilbo Baggins", or it is supposed to; hope I got it right.