Giveaway prize! Okay, well it's not really my kind of story, but I'll give it a go. I think the story could benefit with a few different sentence starters. It reads a bit simply with lots of "I"'s and "They"'s etc. Overall though, it's pretty well written and definitely very steamy.
Just finished reading Chapter one here, very raunchy stuff. I couldn't tear my self away from the words, they intrigued me and had me practically gagging for me! (=
In the beginning, it was very difficult to really feel that she had been through any sort of adversity or that Calix felt anything for Cain. It read more like a summary, devoid of emotion.
That being said, your writing is high quality, wonderfully well-edited, and it did later have more feeling to it.