beornotyes: tying up etc. in my opinion can be done after you have settled into this situation; you need certainty at all times that her is happy with the ongoings - and free to terminate if not. Otherwise deep resentment may boil up... So, I suggest one step at a time, like (gradually) making a common black friend, deepening the fantasy while you fuck being more explicit with yr thoughts etc.
slut: what a story! Now you have to set up the next step...! Won't you repeat this encounter though? Isn't honey sweet?
Panos