Sexual discussions with my wife has never been taboo, but it was and still is in my family.
I received mixed messages about sex when I was growing up. My father never said a word about sex, but then and again he never said much about anything. My mother would joke openly about sex & enjoying it, but would never have frank discussions (perhaps she did with my sisters, I've never asked). This didn't change after I got married, but I'm 99% sure it had much to do with the fact that I'm male, & any such conversations would've been very uncomfortable.
Since we've been married my wife has had more open discussions about sex with her mother, but the discussions still tend to be fairly general.
I wasn't a virgin when I got married, although I was pretty close given my extremely limited experiences
. I was always intrigued by the stories in the mens magazines, most especially Penthouse Variations (keep in mind when I was a randy teenager BETA was in its early infancy, & there was no internet).
It was my good fortune to marry a fantastic young woman who enjoys sex and is very openminded about sexual experimentation. We discuss anything and everything openly without worrying about hurting each others feelings.
I can calmly discuss pretty much any sexual activity or situation with just about anyone with little or no embarrassment, at least on my part. That does not, however, mean that I'm automatically open about all of my sexual proclivities, there are some things best left to the anonymity of internet forums.