We found a couple of posts online that implied when women get married, they don’t tend to talk about sex. The suggestion was that married women have loftier concerns, like babies, children, spouses and housework. The sex talk thing should be something they have grown out of. They are too mature now.
Perhaps if married women don’t want to talk about sexual ‘problems’ or ‘concerns’ with each other, they might feel more comfortable talking about styles of stimulation that appeal to them. Examining stimulation, getting excited about different styles of pornography is a way of discussing sex that doesn’t have to be the revealing of secrets.
Sometimes women don’t tell because it can be wonderful to keep secrets between yourself and your partner.
Sometimes its not private because of a social convention, its private because its more fun that way.