They are made for each other. Hilda sees past the brutish appearance of Emboar to the kind, loyal and protective Pokemon that he is. They have a real Beauty and the Beast thing going on.

>le faithful-
Yes, we're all aware of the fetish doujin. There are doujins and fanart like that for every Pokemon and trainer. In canon, Hilda isn't a dogfucker and is in fact never safer than when she's accompanied by Emboar.