These are very short but I have a small imagine I'm going to be posting in a few minutes (in another book). I'm very late in posting this and I apologize.
Preference: What he does for Valentine's Day.
Thorin: He brings you breakfast in bed and gives you a back/foot rub/massage.
Fili: You come home to find rose petals everywhere and leading to the bedroom.
Kili: He's at your beck and call the entire day, gives you roses and expresses his love for you every way he can think of.
Bilbo: He picks you flowers from his garden and prepares a lovely candle lit dinner for the two of you.
Bofur: He serenades you with a love song he wrote just for you.
Bombur: Makes you a very large cake, and other goodies, which you two eat together.