Give her a chance

"What else can you do for me?" I asked, and my tone of voice made it certain that it would have to be really erotic to make me forgo her ass.
Breathing hard, she offered up her chest. "Bite my tits," she whispered. Odd, but it aroused me. I took her tit in my mouth, sucked on it for a few seconds, then bit down hard. Paula stifled a scream, and her hands clenched into fists.
I took more of her breast into my mouth and bit down again. Again, she bit down a scream. I felt an odd sensation in my mouth and realized that I had broken the skin!
I drew away and looked at her breast. There were red marks all over it with a cut on top. Her tits were standing out more than ever.
Again aroused by this, I went to my closet and brought a belt out. I tied her arms to her torso, passing the belt just beneath her breasts. Then I got a couple of pieces of rope that I had gotten for just this purpose and tied her legs far apart, to pieces of furniture across the room. Her cunt was wide open and inviting.