I got up and stood behind her, pouring a large puddle between her buttocks and spreading it around with my fingers, occasionally entering to lubricate it properly, surprised at how clean her asshole was. Once it was well lubricated a positioned myself to that the tip of my penis rested on it, my legs either side of her legs so they touched her suspenders and I held her firmly above the belt. Before starting I asked her if she was ready, and when she answered yes I tightened my grip.

Gently I forced my oily cock through her tight sphincter, the ring of muscle giving first my head and then the shaft of my dick a firm massage. When I was half-way in I told her: “Tell me to stop if it gets painful,” to which she grunted agreement, so I continued penetrating her forbidden hole, the hotness of her ass squeezing my stiff cock and producing fantastic sensations in it.

Once I’d gone in so far the warm brown flesh of her buttocks were pressed either side of my dick, I slowly withdrew again, her muscles involuntarily pushing me out. My penis slid out and I penetrated her again, this time a little more easily as her muscles began to relax. After repeating this another few times I bent over her and moved my hand up to squeeze her boobs, resting my head on her smooth back with my face amongst her long, black, silky hair, while my hips continued to pull my cock in and out of her hot anus.

Her sphincter had become relatively relaxed now, so although it was still a very tight fit it was easier to re-enter her, so I made my pace of my fucking a little steadier, kissing her back and listening to her heavy breathing. After three minutes I started going faster and entering harder, the friction caused by the speed building up a lovely heat between our flesh, but not causing pain because of the oil.

Nina began panting heavily, and letting out small suppressed squeaks, her head arching back. My breathing became heavier, and I was going as fast as I could, my dick making a pleasant wet slapping, squelching sound every time I rammed it up her ass. Nina let out a sigh as she neared orgasm, and I felt the pressure building up for an orgasm, so I withdrew completely and sat on the bed next to her, kissing her passionately on the lips, letting my penis hang free for a while to delay the orgasm.