Eka's Portal

I forget the title and can't seem to find it. The story had to do with a woman hiring a man to pretend to eat her when he actually does in the end. They had both agreed to a safe word so that the man could know when to stop and spit her out, but she gets lost in ecstasy so much that she ends up eaten. The man waits for a while for her to say the word but eventually falls asleep and whereas the woman gets back to her senses and utters the word, only to realize the man isn't going to spit her out.