Nipple Sex

My wife has very large, thick, and super sensitive nipples and she loves having me rub my erection on them when they are big and hard. We usually start out with cuddling and I gently squeeze her breasts, caressing and lightly pinching her nipples. Her top quickly comes off and she pulls my head down to kiss her nipple. I'll kiss and lick it at first and then alternate between sucking it and pressing my tongue against it and push her nipple into her soft fleshy breast. She arches her back and I slip my arm under her so I can reach her other breast while she guides my right hand down to her now wet pussy where I begin stroking her swelling clit. She reaches over and begins stroking my hardening cock. When it is nice and hard she will turn and whisper "can you put it in my breasts?" Of course no argument from me! I move my body up and kneel over her. She takes my stiff cock and places the tip against her thick erect nipple. Her nipple slides along the underside of my shaft, spreading my precum. She uses her hand to swirl the wet tip of my now throbbing cock in circles around her areola, coating her with my glistening precum. Then she places my tip right atop her nipple and I push gently pressing my cock into her breast. We are both moaning with delight now and my precum is flowing freely. Often she will take me in her lips and wet my swollen head with her tongue before returning it to fuck her nipple. If she's really enjoying it she will switch breasts and start all over again. This sometimes leads to me leaning down and kissing her tiny pink clit..teasing it out of its hiding place and sucking and licking it. More often I just rub her dripping wet pussy with my hands, moving in circles around her exposed clit as I continue to massage her breasts with my cock. Usually at this point she asks me to come inside her but when she is really enjoying the nipple stimulation she'll ask if I want to cum on her breasts. "If you want me to I will.." and she always moans "I want you to." She will press my cock head into one of her nipples. I can feel its hardness against mine and she begins to stroke my shaft. "I want to feel you cum on my nipple" she whispers. If I don't come quickly she pulls me into her mouth and swirls her tongue around my head and then returns it to her breast, stroking me rapidly and rubbing my tip in circles around her rock hard nipple. At the same time I am rubbing her clit furiously, making tight fast circles around her pussy. She gasps and arches her back and I can feel my orgasm building. "It's coming" I moan. "Cum on me" she moans back and I explode onto her soft orb. She presses me into her nipple as I spurt my white cream. A shiver runs down her spine and I feel her pussy pulsing in my hand. Often we come together or within a few seconds of each other. As her body stops shaking she licks the tip of my cock and smiles...