I think it is a mixture of the feel and the "naughtiness" that appeal, but it is just plucking up the courage to say it!! I have come close a couple of times during sex when she has sat on top of me with my dick in her panties and she has rubbed between her panties and body and I been very turned on. I'm not sure if she notice how worked up I was getting, but I think it is something that we would both enjoy! I let you guys know how it goes. Thanks for the advice.