For me, my wife was a virgin when I married her (I wasn't looking for one though, it just happened that way). And she never got over her fear of being penetrated. After some psychological sessions trying to get her over her fear, I just stopped even trying. She's happy, she doesn't have to worry about me penetrating her. And I can't even get it up for her any more anyway, she's the least sexy woman I know. It is funny, but before I married her and having found out that she's a virgin, I had fantasies about teaching her in the ways of great sexiness, like a blank canvas, and I had so much experience. Little did I take into account that some people are just too stubborn for their own good, and her default answer to any question is "no": she doesn't even wait to understand what the question is before answering. :grrrrrr:
Anyway, hobbies like this help out.