Yes, you go get a condom

You groan as you slide out, grabbing the condom and rolling it down your shaft. The rubber constricts your skin, and it feels tight and unnatural around your shaft. As you rub it along her slit, you realize you can't feel any of the texture, and as you slide in, the feeling has been totally deadened.

Even as you start fucking her, you're both barely moaning, and you can't really seem to find a good rhythm. You slowly pump in and out of her, trying to feel something, but are disappointed with each smooth, textureless thrust. It feels totally numb, but her legs hook around your back, pulling you in.