Interesting and we enjoyed your story. We've had a similar experience. To step back a little, way back I guess because my little fantasy started when I was just 12 or 13 years old. I was attending a summer cadet camp. One evening after a baseball game three of my friends and I headed for the showers. The camp was on a military base so modesty was never a consideration when showers were being built, consequently all the showers were in one room with a simple 2 ft. square divider about an adults waist level high provided all the privacy anyone was entitled to. Anyway, as we entered the showers from the dressing room area a much older black cadet, probably 19 or 20 years old was in the shower and masturbating like crazy! I had never seen a black man in person prior to this let alone a black guy masturbating. His manhood, because of our younger age perhaps, looked huge! In fact, as boys will be boys, for the remainder of that camp, almost daily, this episode would become the hot topic of the day. Needless to say that with discussion the guys member grew bigger and bigger, in fact I clearly recall one guy in our group had us believing that this guy had a 24 inch dong! Over active imaginations no question about it!
Anyway, as I entered that phase of life were the ladies demanded more attention, I would sometimes wonder what it would look like to watch a black guy screw a white pussy! Then after we married that fantasy carried over to pillow talk whenever we were heavy into it and I ask Pam things like, "Do you think you'd like to try a black one?" or, "I'd like to see a black guy between your legs right now!", and many variations of these type comments. I won't mention the fact that the first time I bought something like this up I spent the following two nights sleeping alone in the spare bedroom! Anyway, being consistently persistent, eventually Pam began to enjoy, or at least play along with my little fantasies.
Then, almost after almost nine years of marriage, Pam and I were on a combined vacation/convention trip. The first evening at the convention I was dumb founded to meet an old university friend and roommate of mine, Edwin. We had lost contact with each other shortly after graduation, consequently it was more than 10 years since I'd seen him last. Anyway, the following night the three of us went out to dinner and afterwards did some club hopping. The night ended up with Pam asking Edwin to our hotel suite for a night cap, and of course he eagerly accepted. Whereas we've written much about this elsewhere on this site, I'll cut the detail and admit I witnessed Edwin introduce Pam to his magnificent huge, over 11 inch, black cock! It was an awesome sight. It was also the fruition of my fantasy becoming a reality!! The other reality, in addition to witnessing a black guy doing a white pussy, was that the pussy I would see getting pounded was none other than my wife's white pussy! This happened four years ago, i.e., March/2012.