I'm in a very similar situation. My wife is extremely conservative. I bought a Mr. Marcus Realistic Dildo years ago. We only use it when she is pretty *******...like your wife, my wife really enjoys it then. If not *******, we don't even use it. I don't have the guts to discuss my fantasy with her, even after reading a lot of the great recommendations on this site. She does not enjoy porn. Something that I do think is a good thing is that over the past year, we had gone to a nude beach in Florida (Haulover Beach)...I actually posted a recent experience that we had there on another thread. At Haulover, we saw some nice Big Black Cocks. Our first visit, my wife did not get nude. Our second visit (this past May) she got completely nude and actually shook hands with a Black Man that had an enormous cock (again, details in the other thread). She talked about us going back in October (We live in the North)! We aren't into role playing (I say this but we have never tried). I look forward to hearing progress on your end and you sharing any helpful hints to help us along.