Preference: He 'secretly' shows affection
(For this one I'm not including characters who would presumably openly show affection. Those characters were part of a similar preference found in the previous chapter.)
Thorin: You catch him staring and he smiles at you a genuine smile that makes your heart melt. When everyone's asleep he holds you close, with his forehead against yours, kissing you every so often.
Dwalin: He steals kisses when no one is looking and stealthily gives you flowers.
Ori: He passes you love notes and poems and sketches you when you're not looking.
Bifur: He makes little wood carvings and knickknacks for you with dwarvish terms of endearment carved into them.