I'm writing a story about a submissive woman to a dom man, there are bdsm scenes involved. I want to write a scene where she is begging/strongly desiring to feel his cum; in her mouth, on her face, in her pussy, her not really caring where he cums she just wants to feel and taste it. I need help writing it, I can't get the lust, desire and submissiveness to sound right - any help would be appreciated please and thank you.