Yes. There is the "faithful slut," where a woman devote her libido entirely to you
But, really, slut is such a buzzword on /jp/ that it means anything from "promiscuous" to "is not a virgin." Given that /jp/'s usage of the term seems to include "enjoys the act of procreation," I define "faithful slut" as basically a nymphomaniac who wants to fuck your penis until it runs out of semen, ensuring she uses you and only you as the sole outlet for her vice