"Of all the two-bit sluts in this world who could come on to me like that, why did it have to be her?" Michael asked himself bitterly. "Hey, sounds like a Bogart line out of `Casablanca'" he mused. Michael was half-heartedly watching a hockey game on the small black-and-white tv that stood in the corner of the chalet they were renting on the slopes near Boulder. As the dwindling twilight further darkened the overcast skies, a windy snow storm continued howling outside the tiny living room's balcony doors. Embers from a warm fire were still glowing in the fireplace. He took another pull of whiskey and considered his options. If he went to bed with his sister-in-law, he would have to tell his wife. He was certain that no affair could ever remain discrete; secrecy in infidelities and so-called casual affairs were a big myth. His marriage would probably survive an affair, but his relationship with his wife would never be the same. The long-term pain there would be costly. Sex would also ruin his friendship with his sister-in-law. Michael *liked* Deloris. She was good people and fun to be around. She had interesting and valuable insights into travel, culture, and even psychology. Since she was a medical doctor she was forever telling stories about patients, health issues, and society. Fucking would probably ruin all the fun he had talking to her and being around her and her husband. Michael definitely did not mind hurting Deloris' husband; John was a real jerk. Clinically, he suffered from PE, but worse than the physical manifestations of John's problem was his callous lack of any sexual empathy. John really didn't care if Deloris had an orgasm or not. Sex between Deloris and her husband consisted of John's selfishly playing with her breasts until he was erect, some hasty fumbling around, and finally ejaculation within two minutes of penetration. For John, sex was simply getting his rocks off. Having absolutely no amorous experience before marrying John, Deloris had discussed her problems with her sister. Michael wondered if his wife's descriptions of their own love-making had influenced Deloris in any way. "Probably," he thought. Michael turned the volume down on the tv, put a fresh log on the fire, and knocked back the rest of his whiskey. Still thinking about Deloris, he stared into the fire, and stoked the new log absent-mindedly. Then he started looking at the CD's scattered on top of the stereo system. Giggles floated out of the kitchen as the two sisters exchanged gossip and caught up on each others' lives. After glancing at all the titles, he settled on Dire Straits' "brothers in arms," loaded it in the player, and went to the kitchen. It was Michael's wife Gina's turn to do the dinner dishes, and Deloris was standing around watching. As the opening notes of "So Far Away From Me" glided through the little chalet, Michael walked into the kitchen, tapped Deloris on the shoulder and said "Let's dance." Deloris giggled, followed him out of the kitchen, and melted sensuously into his embrace. She concentrated carefully on following his adept fox-trot. Ballroom dancing was another aspect missing from Deloris' married life, and she was thrilled at the opportunity to dance. After only a few seconds, Gina came out of the kitchen, her hands dripping suds, scrutinizing the dancing pair jealously. Michael swung Deloris in a pirouette, stepped away and embraced his wife. They danced a few steps, exchanging loving stares, then she pushed him away and went back in the kitchen to finish the dishes. Deloris and Michael picked up the rhythm and finished their dance, holding each other closely and flowing seductively to the music. The feel of Deloris' soft, voluptuous, breasts against him made Michael grow hard; his hot cock started pressing against his pants. The fox-trot they were dancing caused his cock to brush often against Deloris' legs during their dance. Embarrassed, they avoided each others' eyes. As the music faded away, Michael held her close to him and their eyes met. "I'll come visit you tonight," he whispered huskily. His breathing was shallow and his heart was pounding with animal lust. The two couples go skiing in Colorado twice a winter. This was the third year that they had come to Boulder. Their travel agent got them good deals on flights and accommodations, and they all skied fairly well. They usually stayed in a hotel, but this year, John had arranged for a business trip and got his company to spring for the Chalet. Medical equipment sales-people apparently had big expense accounts. John and Deloris had driven out to the chalet earlier in the week. Deloris was between rotations and John stopped in on clients along the way. Michael and Gina had flown in on Friday afternoon. Although it was possible to ski down to their door in the afternoons, the drive up to the chalet was long and treacherous. Friday night the couples had a light, early dinner and had gone to bed early. The cool, dry, low-pressure mountain air somehow made both Michael and Gina really horny. As they climbed up the narrow ladder to their tiny second floor bedroom that first night, they were quite excited and could hardly wait to take of their clothes and jump under the down comforter. After only a few minutes of hot rugged foreplay, they assumed the missionary position, and started rutting like animals. In a short quarter of an hour they climaxed together, muffling their grunts in the pillows and comforter. "We have to come up to the mountains more often," Michael whispered, still gasping from their mutual orgasm. They cuddled for a few minutes, then Gina reached down, taking his limp penis in her hand. It grew hard to her tender manipulations and she climbed on top of her husband, adeptly inserting his hard member into her still-wet vagina. She moved her pelvis in smooth, slow gyrations, rubbing her clitoris on his pelvic bone. Soon Gina was climaxing again, panting and groaning as wave after wave of pleasure rocked her whole body. Feeling his wife's skin break out in goose bumps and the intense, sudden heat of her vagina, Michael knew she was coming. Thrusting his hips up from underneath her, he pushed his cock harder into her hot love canal to intensify his own pleasure. The rigorous, uncontrolled spasms and shudders of her climax brought Michael over the edge. He was only a few strokes behind her as he shot his second load into her. "That was better," she said softly; she rolled off of him to the side without breaking their embrace. "I love you so much." They cuddled, kissed, and stroked each other softly a few seconds. Michael felt himself getting hard a third time that same hour. He rubbed his hard cock against Gina's thigh. "Again? So soon?" she asked in mock-astonishment. Michael had not been so virile since before they were married. When they were first engaged, it had not been uncommon for them to make love three times a night. However, their five years together had reduced that frequency somewhat. This time the foreplay went on for almost an hour. Gina was apparently not as hot as her husband that night. First Michael kissed and fondled her small breasts, licking, tickling, and massaging her nipples with long gentle strokes. While his tongue was busy with one nipple, he slipped his hand onto her sticky vagina and gently worked the juices up to her clitoris where the gentle stroking of his finger matched the rhythm and intensity of his tongue on her nipple. Finally, after varying the intensity and rhythm a few times, Gina pulled her pelvis away from his hand. "I'm ready," she whispered softly. With unspoken mutual understanding, they both got up onto their hands and knees, and he mounted her from behind. His left hand slipped around her waist onto her labia and his fingers stroked her clitoris as he pumped her slowly from behind. After a few minutes, his back started to get tired and he rested more of his weight on her back and hips. She slipped her knees down, dropping her weight onto the front of her body. They didn't miss a stroke, and his fingers continued to rub her clitoris in cadence to the pumping of his penis in her vagina. Their relaxed, comfortable coitus lasted only fifteen more minutes before Gina once again started to buck and shudder. As her climax washed over her, Michael had trouble just keeping his cock inside her cunt. When she breathed the last blissful, contented sigh of her third orgasm, Michael brought his hand out from under her and shifted his weight onto his hands. Then he started pumping harder and faster. Soon he, too was coming again, ejaculating only a few drops of semen deep into his wife's wet vagina. A few minutes later they were both asleep. Early the next morning, after each took turns running in the freezing cold to the bathroom, they again made love, in spite of their stiffness from the previous night's extended sexual activities. Ravenous, they showered together quickly and went downstairs to prepare breakfast. After breakfast on Saturday morning, John drove off to do business at a hospital in Vale. Michael, Gina, and Deloris hit the slopes early, and in spite of an occasional snow shower, the skiing was fantastic. Deloris raced down the slopes maniacally, trying to show off her style. Michael thought she moved her hips too much and her knees too little but didn't tell her. Deloris was wearing matching pink sun- glasses, hair band, ski suit and gloves. Michael kept pace with with his sister-in-law but waited for his wife at the lifts. Deloris flirted with single men in the lift-lines but always lost them on the slopes; she was skiing very fast that day. When the three skiers returned to the chalet that evening, there was a message from John on the answering machine. He was not staying in the chalet Saturday night because his business meeting had been extended late into the evening. John said he would meet them on the slopes Sunday morning. As the second Dire Straits song started, Deloris looked down, away from Michael's lust-filled eyes. Though she still clung to him, he could see the uncertainty in her face and knew that she was not sure she wanted to sleep with her sister's husband. "If you want to," she said softly. The uncertainty was also reflected in her voice. Her obvious doubt gave Michael pangs of guilt about his planned infidelity. "If I go through with this," he thought to himself, "who is the real jerk? Her loyal, cuckolded husband with sexual problems, or her adulterous brother-in-law who takes advantage of her? Deloris's body features were almost the exact opposite of her sister's. Whereas Gina was tall and slim, with muscular limbs and small breasts, Deloris was only five foot four and had a much rounder figure. Gina's hair was long and dark. She had small brown, narrow eyes and full lips. Gina, on the other hand, had short, sun-bleached, blond hair, huge sparkling blue eyes and thin lips. The irises of Deloris' eyes were hardly ever visible because her pupils were always so dilated. When they got in bed Saturday night, Michael started fondling his wife. "Are you hot?" she asked. "Yes. Aren't you?" "A little. I'm really tired and have 'sore-gasms.' Are you really hot?" He rubbed his erect penis against her back. "Oh no!" she wailed ironically. She took hold of his rock-hard penis and kissed him passionately, bringing his hand down to her vagina. After a few minutes of mutual masturbation, she rolled away and pulled him on top of her. "I'm ready," she said unnecessarily. Michael tried to be slow and gentle because Gina had complained of "sore-gasms." He noted that many women in the heat of passion somehow don't feel pain and later regret being so violent in their love- making. Penetrating very slowly, Michael pushed his pelvic bone against his wife's clitoris and rocked back and forth gently, pumping in long, soft strokes. "Are you close?" Gina asked an hour later. "No," he answered simply. "Do you want to try a different position?" "Ok," she said tiredly. "Which?" "Let's do it standing up" he said excitedly. "No, I'm too tired." "Ok, then doggy-style, you on top." They both rolled onto their backs and Michael helped his wife get on top of him. Gina slipped his soggy wet cock into her vagina and he used both hands to manipulate her labia and clitoris. Gina moved in a slow, unsteady rhythm and Michael manipulated her clitoris softly and quickly. Finally, after another hour of coital pulsing, Gina started to come. Her orgasm was much stronger and more intense than any that weekend; she was almost screaming from the burning intensity of exquisite pleasure. When the last her spasms subsided, Michael pushed her limp body off of his and mounted her in missionary position. It took him almost twenty minutes to bring himself to an orgasm and it was relatively short. The hours of foreplay and coitus had dampened his pleasure. It is also possible that his mind was not completely on his wife. Spent from her intense orgasm, Gina was asleep in a few minutes. Michael's mind drifted downstairs to his lonely sister-in-law. His penis got hard just from his thinking about her gorgeous figure and soft, gentle skin. Biding his time, he looked at the travel clock and decided to give his wife 15 minutes to drift into a deep sleep before getting out of bed. The minutes felt like hours and he noticed he was looking at the clock more than twice a minute. "You don't have to go," his conscience told him. Ten minutes after his wife had fallen asleep, he slipped out of bed, put on his bath robe and climbed down the ladder. He went to the bathroom and padded quietly to the master bedroom. Deloris was sleeping in a warm-up suit, curled up in her down comforter. Michael's heart was pounding so hard, he thought he was going to have a heart attack. He furtively climbed onto her bed and leaned his weight against her, bringing his face close to hers. She slept on, oblivious to his touch. He softly kissed her cheek and put his arms around her gently prodding her until she finally woke up. Without saying a word, she got out of bed and went to the bathroom. Confused and ill-at-ease, he sat up on the bed waiting. She climbed groggily back into bed and pulled the comforter over herself, ignoring him. He slipped under the comforter and embraced her again. She was completely passive and neither said a word. He kissed her, and she responded, pulling him to her and stuffing her tongue in his mouth passionately. Still uncertain of himself and the situation, he slowly slipped his hand under her sweatshirt and massaged one of her nipples. She moaned softly and pulled away from their embrace. Michael thought she was going to tell him to go away, but instead she slipped off her shirt and pulled him down on top of her. They necked like teenagers, swirling and fencing with their tongues while holding each other tightly. His hand kept up a steady manipulation of her huge, soft breasts and erect nipples. Then he broke away from her kissing and started licking her nipple. Sucking her breast into his mouth, he slipped the rest of his body down on top of hers. Deloris moaned softly and arched her back each time he touched her breasts. Michael slipped further down on her bed and pulled her warm-up pants down, burying his face in her wet vagina. She helped him slip off her pants and writhed under the caresses of his tongue on her vagina. Five minutes after his tongue started caressing her clitoris, she exploded in a long, intense orgasm, grunting deeply in her throat. "Why won't you make love to me properly?" she asked him when her orgasm had subsided. He slid up her curvaceous body and lay on top of her, there faces almost touching. "Do you want me to?" he asked. "I don't want to hurt Gina," she said softly. Tears welled up in her eyes and spilled down the sides of her face. "I'll take that as a 'no' then," he said. Relief flooded through him; he had not betrayed his wife. His hot, stiff cock rested uncomfortably on Deloris' thigh, millimeters away from that blond obscure object of his passionate desire. "To tell you the truth, I just wanted you to have an orgasm." he said earnestly. "It's not so important that we make love." She wrapped her arms around his neck and pulled him close to her in a bear hug, sobbing violently but quietly. When she finally let him go, he kissed her on the cheek and left her bed quickly before his cock got any better ideas. First he went to the bathroom, bumping his erect penis in the doorway. He washed his face and hands thoroughly, but couldn't get Deloris' smell out of his mouth. Finally, Michael gargled a shot of whiskey, sloshing it in his mouth until his he couldn't stand the burning sensation anymore. "Where were you so long?" his wife greeted him as he slipped into bed. "Shitting," he replied. "Ok, g'night," she said sleepily. "Good night, Gina. I love you." "love you too."