Yes, I have one or two very close girlfriends with whom I discuss sex. But the majority of my friends? No.
Same here. Best friends. I talk to them about everything so it would be odd if for some reason I "exempted" sex.
And BTW, I would be fine if DH was the same (though I think tops there would only be one friend that he would ever raise the subject with). And actually, if they are also "friends of the marriage," I thinking far from detrimental to a marriage, having a sounding board can only be helpful...