Despite being incredibly turned on, you can't help remember that it was Erica, your ex-fiancée, who insisted that you take this job.
Was this job part of her plan for you? It fits in with all of her teasing. You remember that Erica did want you to lose all your hangups.
And it certainly seems to be working, as you are thinking less and less of your religious and moral scruples and more and more about your cock's lustful, animal needs.