A few days later, Donna's kid sister Bridget dropped by for a visit. She was a blonde highschool senior, a slimmer and slightly less gorgeous version of Donna who had grown up with far fewer parental restrictions. Donna was sometimes shocked by how much their mom and dad let Bridget get away with.
The first part of the afternoon was spent sitting around Donna's living room, drinking Irish coffee and recalling old times. It wasn't long before Donna started confiding her marital problems.
"Honestly, sometimes I think it was the only time we really fucked," Donna whispered. "I mean, we did it before, of course. But this was the first time he was ever really excited."
"He really got off on beating you up, huh?" Bridget suggested.
"Well, I don't know. Maybe… but the thing is, he was really good the next night, too."
"I thought he only fucked you up the ass once."
"He did," Donna repeated. "But I mean, the next night he was really good in bed."
"Differently. He was real gentle and loving. We fucked three times in a row."
"That's not bad," Bridget said.
"Yes, but that was all. He didn't fuck me the next night or the night after that, and when I came on to him last night he just pushed me away. It was like he was excited by my cheating on him, and hurting me, and then he was excited in a different way by being sorry."
"Can't you just talk with him about it?"
"He doesn't want to," Donna replied. "I've tried, but he walks away. All he'll say is that if I ever cheat on him again he'll beat me up even worse."
"Weird."
"The thing is, I'm almost tempted to. If that's the only way I can get him to fuck me good. Besides," Donna added, giggling. "I'm still horny. It's not my fault that my husband only gets turned on once a week when I need it three times a night."
Bridget yawned complacently. "It sounds to me like he's only turned on by sick sex. Roy can't get into a normal relationship. There has to be something sinful about it for him to get excited. Like your fucking around on him, or beating you."
"I guess," Donna said helplessly. "I was beginning to think that myself."
"So I'll tell you what I'll do." Bridget leaned forward and smiled mischievously. "I'll stay for dinner tonight, and afterwards you can say you've got a headache and go upstairs to read. That'll leave me alone with old lover boy. Then I'll throw him a good fuck, and keep on doing it with him every once in a while, and you can keep on messing around with other men."
"What?" Donna said incredulously.
"No, it's perfect." Bridget insisted. "You'll have an open marriage. That's just sinful and illicit enough to give him a hard-on. He'll get turned on to me, because I'm your sister, and I'm pretty. Two, he can't object to you fucking around he he's fucking me, and three, from now on he'll be more horny with you."
"Why?"
"Because you'll be cheating on him, of course!" Bridget said delightedly. "It's like the perfect Catch-22. He can't complain, because he's doing the same thing. On the other hand, he can't help getting stiff when he knows his wife is spreading it around to other guys. Think about it for a second."
Bridget fell silent, and Donna considered the idea. The more she thought the more she knew it would work. Bridget was exceptionally pretty. Her body wasn't as outrageously voluptuous as hers, but her tits were still larger than average, and her figure was lithe and slim. Her husband had long been secretly partial to blondes, and Bridget's face was almost as beautiful as Donna's.
Perhaps more importantly, Bridget was far more liberated than Donna had ever been. She'd been fucking virtually since puberty and the boys she regularly gave her pussy to were some of the handsomest in her high school. Donna knew Roy would be excited by a teenager with such a case of hot pants.
"Okay," Donna said finally. "I guess you can be more objective about it than I can."
"Than I'll take care of him tonight," Bridget said. "And now I think it would be a good idea to take care of you."
Bridget rose from her chair and took a seat next to Donna on the couch. Donna looked at her curiously, failing to understand even as her younger sister draped an arm around, her shoulder, and pushed their thighs together.
Then Bridget cupped Donna's huge tit through her sheet blouse, and Donna suddenly realized that she was horny, for her!
"Oh my God," she whispered. "I can't believe this is happening!"
"Come on, Donna, you know you're horny," Bridget purred persuasively. "You've had that look in your eyes all afternoon. There's nothing wrong with two sisters getting it on together. No one has to know."
Bridget continued to knead and squeeze her tit through the blouse, pinching her fat nipples when they stiffened through the bra. Donna shuddered as she felt the wetness pouring into her cunt. She'd never had a lesbian experience before, or an incestuous one, but she'd become much less reluctant to try new things.
"Come on, Donna, let's take this off; I want to suck your tits."
Bridget undid the buttons and pulled the blouse over her shoulders as Donna sat quivering and doing nothing to stop her. The front clasp of her bra was quickly undone. Bridget's eyes widened as she ogled the size and firmness of her big sister's tits.
"They're so large." She cupped Donna's bare tits in her hands and kneaded them gently, marveling at the smooth, creamy flesh. "I thought mine were big, but you-you've got the more gorgeous pair of jugs I've ever seen."
Leaning forward, Bridget applied her lips to a large, stiff nipple. Donna whimpered as her tongue rolled wetly on the crimson, goose bumped circle, as Bridget gently bit into the rubbery tip. Her pussy was actually throbbing with excitement. Helplessly, Donna rubbed her thighs together to soothe the throbbing in her cunt.
"Let me touch your pussy," Bridget whispered, as if reading her mind. Hungrily nursing at her tits, she unzipped Donna's jeans and thrust her hand under her panties. Her fingers moved through her fleecy cunt curls until she found the sopping slit of her pussy.
"Unggghhh!" Donna groaned. She stiffened, then relaxed totally as Bridget slipped a finger deep inside her gurgling cunt. Never had a man been so sensitive to the needs of her pussy. A woman knew just what turned another woman on.
"Feels good," Bridget sighed. She pulled Donna's jeans and panties further down, her thighs, giving her better access to her cunt triangle. Then she moved her finger in a quick but gentle rhythm, pumping it through the clasping sheath of Donna's hot pussy.
"Oh, Bridget, oh, oh God!" Donna squealed. She gave in completely then, wincing and humping her ass off the couch to grind her cunt onto her hand. "DO it harder! Oh yes, you're making me hot! Jack me off, make my pussy cream!"
Bridget slid from the couch and knelt on the floor. Deftly she pulled Donna's jeans and panties off completely, tossing them over her shoulder. Her hands spread Donna's long, soft, perfectly-formed legs. Hungrily she stared at the pouting, swollen lips of her ripe cunt.
"I'm going to suck you off now," she said commandingly. "This is what you need, Donna. You've never felt anything until another woman eats out your cunt!"
Donna felt as helpless as a little girl, even though she was older than her sister. She submitted as Bridget pulled her ass to the edge of the couch cushion, and thrust her hands under her thighs to grip the rounded cheeks. Her cunt was burning with anticipation. She couldn't wait to feel Bridget's tongue lapping up the juices that oozed from her fuck slit.
Groaning. Bridget buried her face between Donna's thighs. Her tongue darted at her pussy, licking a long, tantalizing swipe up the small slit of her cunt. Then she began to eat her out steadily, thrusting her tongue deep inside the aching sheath of her pussy.
"Unggghhh," Donna groaned. She splayed her thighs farther apart and again began to move her ass in the bucking motions of fucking, shamelessly pounding her hairy cunt onto her sister's mouth. "Oh Jesus, Bridget, that does feel good! Mmmmmnnnnn! Suck me more, oh shit, my cunt's getting so wet! Make me come!"
Bridget sucked her pussy noisily. She slid her hand up Donna's thighs and pushed two fingers into the clinging tunnel of her pussy. Soon, her tongue began to move towards the stiffened, pulsing bud of her clit.
"Awwwunngghh!" Donna started humping her ass like a dog in heat, wincing and flushing and grunting as the pleasure mounted to the point of explosion deep inside her gushing cunt. "Yes, Bridget! Suck it now, eat me out, drink my juices! Awwww fuck, I'm getting so close!"
Bridget's left hand moved all over Donna's nakedness, alternately patting her ass and squeezing her tits and stroking her thigh. Her right hand busily pumped between her legs, finger-fucking her dripping cunt. Donna writhed uncontrollably in ecstasy.
Then Bridget separated the cheeks of her ass and touched her throbbing, puckering asshole. Donna gasped like a wounded animal as she buried a finger deep inside her asshole, loosening the rubbery tunnel. Finally Bridget glued her lips to Donna's clit and sucked it wetly, tickling the tip with her tongue.
"Unh, unh, coming, I'm coming?" Donna whined. She locked her thighs around her sister's ears and bucked so hard her tits jiggled and swayed on her chest, flushing deeply as the spasms churned through her pussy. "Keep sucking, Bridget! Suck my cunt! Oh yessss, oh my God I'm coommmiiinnng!"
Bridget kept licking her pussy long after her climax had subsided, cleansing her cunt slit of her oozing fuck juices. Then she sat back and calmly started to strip off her own clothes.
"Now you do me," she said. Bridget stripped off her blouse, showing her slender, taut belly and the firm globes of her tits. "Come on, Donna," she added playfully. "Aren't my tits nice? Don't you want to suck on them?"
Still panting in the aftermath of coming, Donna was anxious to taste her teenage sister's body. She'd never really made love to anyone before. It had always been her assuming the passive role while a man fucked her.
Sliding from the couch, the naked Donna joined her sister on the floor. Her hands glided up Bridget's torso, squeezing and pinching her round, milk-white tits. Donna glued her mouth to one fat, cherry-red cap and sucked it hungrily.
"Ummmm, that really feels good," Bridget purred. She kicked off her sandals and unbuttoned her jeans, exposing the fleecy curls of her hairy pussy mound. "Play with my cunt, honey. That feels so good when I'm getting my tits sucked."
Slurping eagerly, Donna slipped her fingers through her cunt hairs, into the sopping lips of her swollen pussy. Bridget grunted noisily as her cunt was invaded by two long fingers. Donna started to jack her off as her mouth worked on her nipples, rhythmically pumping her fingers into the silky sheath of Bridget's pussy.
"Unh, suck me now, Donna! Mmmmnn, mnnn!" Bridget moaned uncontrollably as she struggled, to pull her jeans over the rounded cheeks of her ass. Finally she managed to kick them off, leaving herself naked.
She pushed Donna away from her tits and stretched out on the carpet. Then she wiggled her ass and spread her long legs wide, opening the curly-haired fissure of her dripping, aching cunt.
"Suck my pussy, Donna!" She held Donna's head and urged her towards the musky scented richness of her cunt. "Please, I need to come so bad!"
Donna moaned as she dropped her head between her sister's thighs, rubbing her face shamelessly all over her gushing cunt. She felt strong and purposeful, almost like a man. She knew she had complete control over Bridget's pleasure.
Expertly she started eating her out, as if she'd been sucking cunt all her life. Donna thrust her hands under Bridget's thighs and cupped the perfectly rounded cheeks of her ass, feeling the globes shiver and contract with the heat growing in her pussy. It turned her on to know that Bridget was even hornier than she was.
She ran her tongue up and down, Bridget's soft teenage pussy, licking and tenderly chewing the swollen pink lips. Bridget gasped and instantly started humping her ass off the floor, thrusting her cunt needfully onto Donna's mouth. Donna sucked harder, pushing her tongue deep into her aching fuck tunnel.
"Finger me!" Bridget pleaded. She grabbed one of Donna's hands and pulled it from her humping asscheeks. "Put in three… unhhh… three fingers! Oh shit, you're making me so horny! Jack off my cunt!"
Donna obediently rammed three fingers into her wide-open cunt. She jacked her off hard and fast, until her whole hand was coated with the scented stickiness of her fuck juices. Then she caught her burning clit between her lips and sucked it slowly, rolling her tongue all over the distended pink bud.
"Hump me!" Bridget shrieked suddenly. Her expression was agonized – obviously she was on the verge of coming. "Get on top of me! Oh Donna, fuck me with your pussy! Rub my cunt!"
Donna was shocked by the obscene suggestion, but she was too horny to care. Quickly she stretched out between her sister's legs and contracted her asscheeks, until their cunt hairs merged together.
Bridget whimpered and started bucking furiously. Donna bucked back, surprised by the new lust flowing into her cunt.
"Coming, unh, unh, coming, unh, unh," Bridget burbled. She clawed Donna's shoulders and pounded her pussy onto hers, groaning as their fuck juices flowed together and their clits touched with every thrust. "Awwww Donna! Fuck me, sister, fuck me!" Donna could actually feel her pussy throbbing as the come swept through her sister's body. Continually she pumped her ass as Bridget came, letting all the ecstasy drain from her cunt. Afterwards their bodies were covered with sweat, and their oozing pussies stained the carpet beneath them. They hugged each other tenderly, kissing in gratitude for the pleasure they both enjoyed.
"Tonight," Bridget said, giggling. "As soon as we've finished dinner I'll make a pass at him. Don't worry, it'll work."
"I'm sure it will," Donna sighed. "I never knew you were so horny."
"We came from the same genes," Bridget laughed. "And don't worry about another thing we can keep fucking together like this, any time you like. You're almost as good as a man!"
Donna smiled in agreement.