“Because it’s embarrassing, Jeff. I was such a loser back then,” she said, clearly uncomfortable as she remembered her far from happy high school years. “I even had to ask my sister’s help to lose my virginity, it’s not exactly something I’m proud of… But,” she added, “Dana did help me after all, and that meant a lot to me. I know that she comes off as a ditzy plastic doll most of the time, but she’s really not that bad. And sure, we fight a lot, but we do love each other, you know. We really do.”
I nodded, knowing that, despite their frequent bickering, Deb and Dana were very close, surely closer than my siblings and I. “So,” I said, hesitantly “I guess she told you that now it’s time to return the favor, lend her your boyfriend like she lent you hers back then?”
Deb shrugged, tilting her head. “Yeah, pretty much. Will you do it?”
Her eyes were piercing into mine. Those beautiful, soulful hazel eyes that I never tired to look into. I was so enveloped in Deb’s warmth and her scent and our closeness, not to mention my cock still buried in her ass, that I didn’t even need to think about my answer. The words flowed freely as I held my babe closer.
“No,” I said, “I don’t want to, Debs. I don’t want anyone else. And yes, I realize it’s okay with you and all, but I can’t cheat on you, babe. Not even if you’re asking me to. I love you, Debs. I won’t do anything that could ruin things between us. Plus, why would I ever want to fuck another ass? You have the ultimate bubble-butt, babe, and you let me, no, you make me fuck it all the time!”
Deb just looked at me for a second, her lips quivering and her eyes shining. She made a little laughing sound, then she smashed her soft mouth into mine and kissed me furiously, pressing her body against mine and tightening her anal muscles around my length. I groaned as Deb devoured my lips, holding my face between her tiny hands.
I know what you’re thinking. I’m an idiot, right? That’s what most of my buddies would have thought of me if they had known that I had turned down the offer to fuck my girlfriend’s sister in the ass. In fact, they already told me I was an idiot on a regular basis, insisting that I had picked the wrong twin because sure, Deb was okay, but Dana, oh boy, Dana was such a smoking hot chick with that super model figure of hers and blah blah blah. I just shook my head and laughed whenever I heard that kind of nonsense. They could keep flirty, fit, forever-on-a-diet Dana, the poor fools. She couldn’t hold a candle to my sweet Debs. My smart, curvy, loving Debs that was currently trying to suffocate me with kisses while she milked my cock with her sperm-coated bowels.
When she finally came up for air, Deb had a beaming smile on her lips. “Oh Jeff! I love you so much, baby! I knew you were the real deal! Any guy I ever dated would have jumped at the chance to fuck Dana, they always looked at her, the jerks! But you… Oh, baby!”
She went on kissing me and squeezing my cock inside her rectum for a while, and I just let her. What do you know, apparently I had just passed some sort of test! As we made out, I massaged and grabbed and kneaded Deb’s juicy rump. All the while, she slowly sucked me hard again with her slippery asshole, whimpering in my mouth as she teased the both of us into another assfuck.
I was ready for round two when Deb broke our lip-lock. She sat up straight, her hands on my chest, her back arched, her hips rocking as she began grinding her round meaty ass on my recuperated pole. She surprised me when she said between squeals of pleasure: “Mmh… Your cock feels so good in my ass, baby… Mmmh… I’m so glad you said no, Jeff… Oooh yeah, touch my big titties while I ride your cock with my ass… Aaaahhh yeah, like that!… Mmh… Now I know for sure I’ll have nothing to fear when we fuck Dana together.”
“What!? What do you mean ‘we’ fuck her? Plus, I just told you I don’t…”
Deb laughed and leaned down to give me a swift kiss before returning to stirring her bowels with my hard shaft. “Yes, I know what you said, baby. But don’t you see? That’s exactly why I can agree to Dana’s request. Now I know for sure. I can let you do it BECAUSE you don’t want to. Get it?”
I nodded my head, puzzled, focusing on my cock up her ass and my hands on her buxom tits, the only things that still seemed to make some sense. “Sure,” I mumbled, “there’s some twisted logic to it. But babe, I was serious. I don’t want to cheat on you!”
It felt somehow absurd to have to say something like that to my girlfriend, but then I should have known better than to try and reason out anything at all that involved her relationship with Dana. As expected, Deb was unperturbed by my renewed profession of fidelity.
“Aww Jeff, I know. And believe me, I love you for it,” she said, sitting still on my dick, resuming her cock-milking routine as she spoke. “But I never meant to let her have you all to herself. My only condition to lend you to her was that I’d be involved too. And of course Dana agreed, little lesbo slut that she is!” Deb smirked at that, then she calmly concluded: “You don’t have to worry, baby, it’s okay. I’ll fuck her too. It’s not cheating if it’s a threesome, right?”
Deb was smiling. Me, I was panting. And not just from the amazing anal suction she was treating me to. “Whaaa?! You mean… You and Dana!?”
Deb just gave me a thin smile and cocked an eyebrow. She raised her hips up, sliding her asshole all the way along my pole until only my mushroom head was still snugly gripped within her anus, then she slid down, moaning, cramming my boner balls-deep inside the buttery tightness of her ass. As she impaled herself on me in a slow tempo, she began speaking in a mewling, pleasure-thick voice.
Apparently, Deb and Dana had experimented a bit when they were younger. They had never had issues being naked around each other or touching one another’s body. Dana in particular was quite taken with Deb’s tits, which blossomed earlier than hers and were always way bigger. They had practiced kissing with each other way before either of them ever kissed a boy. They had often masturbated together, mostly just watching each other. Sometimes though, they fingered the other’s pussy to climax. It didn’t happen all the time, but it did happen.
Deb related all this as we fucked. I listened in a daze. Her voice was broken by throaty moans as she persistently stuffed her ass with my hard-on, but her manner remained very nonchalant, as if she didn’t really think much of her incestuous encounters with her twin.