So there I was gently grinding my anus on his tongue which had snaked into my rectum yet again, when he suddenly pulled his mouth away. I was just on the verge of another cunt-crushing orgasm, and was reeling from disappointment. Then suddenly I felt something firmer rubbing my anus, probing softly for an entrance--it was his thumb. Given how lubricated and relaxed my hole had become from his oral ministrations, it didn't take much for me to open like a flower and take his thumb into my warm, buttery rectum. I came immediately. Both my cunt and my ass were squeezing so hard I could barely breathe.
But I was also crazed with lust in a way I'd never before experienced. My mind was moving a mile a minute speculating on the thickness and length of his thumb vis-a-vis the thickness and length of his beautiful, sweet cock. I flipped myself over to my back and looked my brother dead in the eye.
At first, I think he thought I was angry. But I gently placed my hand around his cock, and scooted down closer to him. We never lost eye contact as I swiped his cock head over and around my anus. I, too, was gently probing. When I felt his cock just ever so slightly lodge into my small wrinkled hole, I lifted my hips to prod my brother into giving a gentle push.
The most beautiful feeling came over me. He was gazing at me with such intense love and craving as the crown of his cock slipped past my anal opening. My rectum was already so relaxed and well-lubricated that it took almost no effort for the length of my brother's beautiful cock to sink into me completely. Again, I came with ferocity. My hips lifted, my cunt contracted like crazy, his cock plunged deeper, then gave a kick of what felt like one long, never-ending stream of his cum.
We held onto each other for almost an hour after cumming together for the first time. I cried a little, but not with pain. I was so overjoyed at this new-found pleasure. We could be joined as one loving, sexual creature. I could feel my brother inside of me and share our orgasms together while he held me safely in his arms. And, most important, we could avoid pregnancy.
Shortly thereafter we found that he could lay on his back while I sat on his cock and take him inside my ass even more deeply. This also brought another discovery; I could grind my clit along his pubic bone while being filled with cock. This was even more intense than when my brother would fuck my ass from either above or behind, so it quickly became my preferred method of our routine anal intercourse.
One day, I found myself gazing down at my brother. I was sitting upright, my rectum filled with his slowly deflating cock, and overflowing with cum which was pooling around my anus. My cunt and rectum were still gently spasming, and my heart was bursting with love. My brother's heart must have been filled with the same emotions; he chose that moment to ask me to be his wife, forever. I leaned over and brushed my swelling breast to his lips, and whispered "Yes!"
