Why don't we have romance with dwarf girls?

First, I read The Beggining After the End novel, AND I LOVE IT, but after read how the races see sex appeal, I questioned myself: "Why have I never seen a novel/Manga where the female character is a dwarf?" And worst, a female dwarf thats LOOKS LIKE A DWARF instead of a short human girl. A Dwarf girl (for me) is large, has thick arms and a lot of hair, hair on arm etc...

My guess is simplistic, Sadly Dwarfs girls doesn't sell, even though I like it and have a small audience. What is your opinion?

AND ALL THIS FOR THE SECOND: Please, send Manga/Novel recommendation with romance with dwarf girls that looks like dwarf (not necessarily focused on romance, but have romance) :D

English is not my first language, any error sorry