Chapter 18: Couples TherapyThe morning’s yoga lessons, normally relaxing, could not shake Trevor’s trepidation about what was to come. It was a curious mix of feelings, he thought, being both terrified and incredibly horny. As he went through the forms with Stacy, he marveled at how relaxed she was. Then, his sister was an admitted slut, he now knew. Having sex with a couple together was probably something she’d already done. There was something different about today, though. Previously, after their lessons, Stacy had basically brushed aside any traces of them ever happening, until she roped him into the next one. Today, she had a giddy sense of excitement about her.Because last night wasn’t a lesson, he thought. It was just for pleasure, and it was nasty. It was incest. Even after Stacy had left the room, carefully cleaned his new toy, and given it back to him, he couldn’t shake the feelings he was having. He really was becoming a pervert, imagining what it would be like to really feel his cock in Stacy’s pussy. His sister might be a slut, and even enjoy what they were doing together, but she’d made it pretty clear that there was a line she wasn’t going to cross, so he had to respect that. Still, it was torture of the most pleasurable kind.Now, though, he was faced with this new dilemma. If his own girlfriend wouldn’t fuck him, and Stacy wouldn’t fuck him, was he condemned to a life of being cockteased and jerking off into a rubber pussy molded to feel like his sister’s? Would he never get to experience real sex? Stacy’s friends had been forward about the fact that they’d be willing, but then he’d just be a cheater. Why was having a penis so difficult?“You can let it go now,” Stacy said, snapping him out of his thoughts.“Huh?”“Dude, you’ve been holding that pose for so long your leg’s about to give out.”“Oh.”He let his leg down and shook his head.“Sorry,” he said.She gave him a sly grin and asked, “Something on your mind?”“Just thinking. You know.”“Do you need to go upstairs and fuck your sister to take the edge off?” she asked, making him blush.“That’s not funny.”“That was hilarious!” she said and pulled him into a hug, “I know. I’m just a horrible tease. You hate it.”His cock lurched against her leg, indicating that he did not, in fact, hate it.“Go wash some of that stink off before Mary comes over,” she instructed.He nodded and did.The sight that greeted him when he went out to the pool was one from his fantasies. For a moment, he only stood and stared. Stacy and Mary were already in the pool, their lips locked together, making out in their bikinis. Trevor crept to the steps of the pool and glided down them slowly, as though stalking prey that might flee at the slightest sound. The two girls turned to him, breaking apart as he entered the pool.Stacy leaned in to whisper something in Mary’s ear that made her cover her mouth and stifle a giggle. She turned her to face Trevor, resting her chin on Mary’s shoulder, her hands sliding possessively across her belly. Mary’s new suit was, surprisingly, the more revealing of the two that Stacy had purchased for her. It was barely two pieces of fabric over her naked body. Despite the chill of the pool water, Trevor felt himself responding to the two half-naked girls.Stacy released Mary, and she waded toward him, embracing him, and giving him a kiss on the lips. There was none of the spark-filled sensuality behind it that Stacy had, but it was escort bayan pleasant.“You don’t have to…“ he started, “I don’t want to make it weird for you.”She shook her head, “I’m sorry, Trevor. I never meant for this to happen, and I want you to know that I really do love you. Just because I don’t want to have sex with a man, doesn’t mean I don’t love you.”Stacy joined them and said, “It’s only going to be weird if you two make it weird. You’re overthinking it. Sex isn’t scary. It’s fun. Come here, baby.”Stacy took Mary again and slid her arms around her neck, putting their foreheads together and looking into her eyes. Then, she pushed in and kissed her as Trevor watched. He wasn’t sure what he’d expected to feel, but what he did feel was a sense of excitement, like he was a voyeur watching these two in an intimate moment. The two girls were clearly into each other, touching and kissing. He could see their excited breathing. It was a far different reaction from his girlfriend than when he kissed her. Mary held her hand out to him, and he came.She stepped back and watched as Stacy switched her attention to Trevor. They looked at one another for one, awkward moment, and then Stacy planted her lips on his. She was reserved, as though she’d never done it before, and Trevor played it the same way. He felt Mary behind him, embracing him from the back, running her small hands over his chest as Stacy kissed him.Stacy’s tongue slid into Trevor’s mouth, and Mary let herself moan. The two of them looked so sexy together, like they were meant to share this kind of experience. Their bodies were perfect, and they were both beautiful. Stacy pulled Mary back and switched again. Rather than standing like a stooge, though, Trevor asserted himself, taking full advantage of the moment. He cupped Stacy’s big tits from behind and groped them as his sister sucked on his girlfriend’s tongue. Stacy moaned her appreciation into Mary’s mouth. Stacy rubbed her ass against his cock, and from his over-the-shoulder view, he could see his sister’s hand under the water, rubbing Mary between the legs.“Your boyfriend loves my tits,” Stacy said to her, “Those big hands of his are turning me on as much as your warm little pussy, baby.”Mary gasped at Stacy’s dirty talk. Even though she’d had sex with Stacy twice, now, it was still so exciting hearing it. Stacy tilted her head back and made out with Trevor again while maintaining her motion between Mary’s legs. Mary marveled at her talent, to be able to divide her attention like that.“I’m going to fuck your girlfriend, baby,” she said to Trevor, “Do you want to watch me make your girlfriend cum?”“Yeah…“ Trevor readily agreed.“Can I take you both inside?” Stacy asked, pulling Mary closer and stroking her hard nipples through her suit, “Can we go upstairs, and all be wet and naked on your bed, so we can fuck?”Mary uncharacteristically reached behind Stacy’s neck and pulled her down to kiss her, reaching up to molest one of her tits, while Trevor played with the other. He slid his other hand down Stacy’s body and rubbed her slit through the bikini bottoms. Stacy moaned happily. Apparently, the word ‘fuck’ was just what they both needed to really get going.The three of them left the pool with towels wrapped around them and made a quick dash up to Trevor’s room. While he quickly flipped through music and selected some sexy random playlist, the two girls were already dropping towels kocaeli escort bayan and discarding their suits as they tongue kissed and touched. This was going so much better than Stacy had expected. She’d been sure there would be awkwardness, and that she’d have to shepherd the two of them through clumsy fumbling, but there was none of that. Trevor, she could understand, but Mary was a surprise even after Stacy had twice seduced her. The tiny girl was on fire.Mary surprised herself with her ferocity. The moment she’d seen the two siblings’ tongues touch, it was like someone had lit a flame between her legs. There was something so sexy about watching her boyfriend being seduced and pleasured by the girl she’d given herself to, and the added fact that his own sister was getting him hot, the way she’d done to her, was like a powder keg of sexual energy. Being with Stacy had excited her beyond belief. Being with the two of them was even more so.Trevor returned to his position behind Stacy and cupped her naked breasts in his hands. Mary covered his hands with her own, sending a shock through all three of them. Stacy finally pulled herself away and lay on the bed. Mary turned to Trevor, got on her knees, and tugged his shorts down, coming face-to-face with her fears for the first time. Her eyes went wide with shock at the size of it, every bit as frightening as she’d dreamed. She couldn’t imagine how that thing was supposed to fit into her. For a moment, her nerve faltered. Then, Stacy was there to save her.Stacy hooked her legs around Trevor’s and turned him toward her.“Tell your boyfriend to come shove his big cock between my tits, sexy girl,” Stacy ordered.A hot knot of something dirty and exciting grew inside of Mary at those words. Sexy girl. She was a sexy girl with a youthful body, compared to Stacy. She couldn’t step up and be a woman for him, so a real woman had to do it for her. Her hot boyfriend had to get his cock off with his own sister because Mary wasn’t able to do it for him. It was humiliating but so strangely erotic.Mary stood up and gripped Trevor’s naked ass. Her small hands ran over his chest, and she looked up at him.“I know how much you need this. Go fuck your sister’s tits,” she said, adding sister in just to make it a little naughtier.Trevor needed no further prompting. He straddled Stacy’s chest and pushed her tits together to form a nice channel to fuck his cock into. She heard from behind Trevor, the sound of Mary spitting into her hand, and then she shocked them both by reaching around and smearing the goopy mess into his cock shaft.Trevor groaned as his girlfriend touched his penis for the first time.Stacy said, “Fuck yes! Rub that spit into his dick so he can fuck my tits. That’s so fucking kinky!”Mary got to her knees and sucked on Stacy’s nipples as Trevor’s cock bobbed closer to them. Then, the little redhead squeezed Stacy’s tits together so Trevor could fuck them, again delightfully shocking the two of them. Stacy felt proud. Whatever switch she’d flipped in Mary ramped her up to full-blown slut mode. Mary moaned out loud as Trevor pushed his cock between Stacy’s breasts. The small girl spit on his cock again and returned to sucking on Stacy’s nipples.“How does it feel to fuck those big tits, baby?” Stacy asked, staring up at her brother.“So good…“ he said, as he rested one hand in Mary’s hair. A week ago, if someone kocaeli escort had told him that his shy girlfriend would be mashing his sister’s breasts together so he could fuck them, he would have died laughing. Today, it was reality, and it was wonderful.“Your boyfriend loves my tits, baby,” Stacy said, putting her hand on Mary’s neck, “He can’t fuck your tits, can he?”“Mmm mmm,” Mary agreed, trembling, her mouth full of nipple.“He can’t fuck your pussy either, can he?”“Mmm mmm.”“Because his girlfriend wants pussy, huh?”“Mmm hmm.”“Your girlfriend’s a sexy lesbian that only wants pussy,” Stacy said to her brother. “Can I eat your girlfriend’s pussy for you, baby? Will you let me suck her pussy, please?”Trevor surged forward and pushed his cock into Stacy’s teasing mouth.“Suck on this first,” he said, completely overcome.Stacy’s eyes widened in momentary surprise and then smoldered as she looked up at him as though she’d won. He saw the look, knew it for what it was, and that she was right. He couldn’t take it anymore. He had to know. He had to know what that hot, sucking, filth-spewing mouth felt like. It was heavenly. Mary seemed just as surprised as Stacy, but then she was rubbing her twat as Trevor fucked his sister’s mouth and Stacy’s hands were gripping his ass, encouraging him.Stacy lost sight of Mary as Trevor pumped his cock in and out of her mouth, his hand in her hair. Then, she felt the girl’s tongue between her legs, just as she’d taught her, lapping, sucking and fucking with her fingers. Stacy humped the girl’s face as her brother humped hers. Trevor was panting now, grunting like an animal as he pushed his control to its breaking point. Stacy was so hot. This was so fucking nasty! Being face-fucked by her own brother while his pussy-whipped girlfriend denied him sex so that she could lust after cunt was a fucking ten on her slut-o-meter. She moaned around Trevor’s thrusting dick and came on Mary’s face.“Ooooh fuck!” Trevor cried, and held his spurting cock in Stacy’s mouth, forcing her to drink his cum or drown in it. She swallowed, shot after shot of incestuous semen, her eyes rolling back in her head as her own depravity set off fireworks in her brain. Trevor pulled his dick from her mouth with a huff and fell back on the bed, his hand over his face, breathing hard. Mary was up in a shot, burying her tongue in Stacy’s mouth, groping her tits while she licked out Trevor’s remaining sperm.Did not expect that! Stacy thought, swapping the filthy snowball back and forth between them as she cupped the redhead’s ass in her hands and gave Mary her full attention. Now that Trevor was sated, he would have to watch his girlfriend surrender. And surrender she did, climaxing hotly on Stacy’s expert tongue three more times before she finally tapped out.Trevor’s bed was a wet mess of chlorine, pool water, and bodily fluids as the three of them lay naked together cuddling. Stacy lay in the middle of the two naked lovers, right where she felt she should be.Chapter 19: We’re Not Gonna FuckWell past midnight, Trevor lay on his bed working through his tangled emotions, and the long-term implications of what this odd new quirk in his relationship meant. What was a relationship? It was something that worked for everyone involved. It met their physical, emotional, spiritual, and sexual needs. It made them happy. Mary made him happy emotionally, spiritually, and physically. Sexually? That was different. They wouldn’t have sex, but he couldn’t deny that watching her be sexually fulfilled by another woman wasn’t enjoyable. It had been. In that way, it was sexually fulfilling. He, though, would not be having sex with her, which was not fulfilling.