I'm a 35 y/o white man, on my 2nd marriage. My wife is black, 34, and she has a 14 y/o daughter. The sex has never been better for me as my wife indulges my fantasies - my intense foot fetish, lite bondage, and crossdressing. We are close in size, and her clothes from when she was 25 lbs heavier fit me perfect. Our love life is awesome, and my stepdaughter and mother in law accept that I crossdress out in the open.
I know how you feel I have a girlfriend who gives me sissy training and dresses me and strapon fucks me till I cum too. As enjoyable as it all is we have to remember to make her happy too. As long as both parties are happy no harm done. I started to feel so comfortable being the sissy slut I wanted more and more and lost track of her needs. So keep it in check and mix it up a bit. I think being a freak is ok but you need to make sure she initiates anything outside your marriage or you could do irreversible damage to the marriage or relationship. Be safe and have fun.
P.S. Commenter #2 awesome story good luck as well.