“Not yet,” she said, “lips first, slow, but with desire. The tongue teases the lips first, coaxes hers out to yours.”
She kissed again, and Trevor took his time, playing his tongue across her lips, and he was rewarded when Stacy’s slipped out to touch it. He couldn’t help but make a mental comparison between Stacy and Mary. She was right. He could feel Stacy’s confidence in what she was doing, and the fear that Mary’s kisses held. Mary was too much in her own head, focused on her insecurity, just like he was. Stacy was in his head, showing him she owned him.
The sound of their wet lips smacking filled the room. Trevor became a bit more bold, and on his next pass down her side, he moved his hands down her bare leg, brushing his fingers just behind her knee. Stacy moaned into his mouth, and he felt genuine excitement in her. He allowed himself an exultant thrill at having given her pleasure, and continued his path up the back of her leg and over the flesh of her ass, palm flat, gripping her glute with just a touch of the animal aggression that was building up inside him. Stacy moved her leg over his and hooked it behind his knee.
Her hand finally moved on his chest, and traced its way over his body, exploring it in the same way her tongue and lips explored his mouth. He could feel her breathing become more excited as he continued to let his hands roam up her back, along her neck, behind her ear, brushing her hair lightly out of the way, cupping her cheek as their tongues slipped across each other.
Trevor broke their kiss and nuzzled her cheek. He flicked his tongue lightly across her earlobe and kissed that spot just behind her ear, whispering, “You’re so sexy.”
He felt Stacy quiver delightfully and felt proud of himself for remembering to get into her head.
“Good, now you can be a little dirtier,” she encouraged. “Tell me what I’m doing to you.”
“You’re making my…my cock so hard,” Trevor whispered.
Stacy purred, and kissed him, then said, “Now, you can go for the tits, just a little. Don’t assault them. Be gentle, brush the nipples, squeeze them softly.”
Trevor focused on his breathing, and let his hands wander up to Stacy’s breasts, where he cupped one in his trembling hand. God, they were so much bigger than Mary’s. The feeling was incredible. Her nipples were hard little points beneath the suit top, and he played his fingers over them, making Stacy exhale excitedly into his mouth.
“Just like that,” she encouraged, “you’re making my pussy so wet, baby.”
Trevor felt his dick lurch at the mention of Stacy’s wet pussy.
“Now, keep going. Don’t push the dick on her,” Stacy said. “She wants it. She’ll let you know when she needs it.”
While he continued to rub her breast through the top, Stacy slid her hand down to his shorts, where she found his engorged penis. She caressed it and fondled it lightly through his trunks, making him groan. It was getting more difficult to focus on his breathing as Stacy’s fingers wrapped around his shaft and stroked gently.
“You’re so hard,” she said breathily, “and so big.”
She kissed him again as she stroked his cock through the trunks, cupping his balls, squeezing his shaft. He wondered what her thick, smacking lips would feel like sliding up and down his cock, rather than her hand, but that was stupid. She was just teaching him to kiss and touch. She was being helpful, and he was being a pervert.
Stacy’s handling of his cock was quickly pushing him toward cumming, and it was getting harder to focus on keeping his breathing even. The overwhelming pleasure in his penis, the first time a real woman had ever touched it, was quickly pushing his mind out of his mental space that had kept him calm. Now, his excitement was peaking, and he knew that if she didn’t stop, the end was imminent. Stacy could feel his penis twitching in her hand, growing fatter as Trevor approached his orgasm.
“Stac…” he croaked.
“It’s ok. Just let it happen,” she said, and smacked her lips against his again, slipping her tongue playfully into his mouth.
Trevor’s hands on her body had stopped moving. One hand clung tightly to her ass as his body trembled. She could feel how he was holding back his need to cum, wanting the pleasure to last as long as possible, but he was losing. He didn’t stand a chance; she knew. It was the first time a woman had really touched his cock, and he was young. He didn’t have staying power. He would, though. She would make sure of that.
“It feels so good, doesn’t it?” she breathed in his ear.
Trevor couldn’t reply. If he opened his mouth, he would cum. His complete attention was focused on fighting it off. She was right. It felt so fucking good that he didn’t want it to end.
“You’re thinking about my pussy, aren’t you?”
Trevor shuddered. He was thinking about her pussy. He was wondering how amazing a warm, wet pussy around his cock would feel if just a hand was this good.
“You want to fuck it, don’t you, baby? You want to put your big, perverted cock in your sister and cum.”
Trevor gasped and lost control. His cock erupted into his shorts, semen soaking through the fabric onto Stacy’s hand, while she continued to milk him dry. She pushed her tongue back into his mouth and felt his hot breath, panting and grunting into her mouth as he unloaded his balls for her. She stroked back his hair as he enjoyed his first orgasm from a woman. When he’d stopped twitching and his cock softened, Stacy pulled her lips away, but continued stroking his hair.
Trevor regained his senses, and felt the cum drying and cooling in his shorts, a sticky mess that made his limp penis cling to the fabric of his swimsuit. Stacy watched his face turn beet red from embarrassment, and his lips quivered as though he might cry. God, she wanted to plunge her fingers into her cunt so badly. There was nothing like that look of shame in a man’s eyes once he’s realized what he’s done. She knew he’d be telling himself that it would never happen again. He wasn’t a cheater. It had been a moment of weakness. Then, he would have an erection, and he would think of her.
She was absolutely right. Trevor’s mind was a jumble of emotions. He’d cheated on his girlfriend, cheated on Mary with his own sister. Was it really cheating, though? He hadn’t had sex, couldn’t have sex with Stacy. She was his sister. He wasn’t going to fuck her. He was learning. He was learning how to be a good lover, and it just happened to be Stacy who was teaching him what he needed to know. This was a good thing, he reconciled. It was a good thing for both of them. He would be able to please Mary.
He’d have experience, and know how to make it good for her, so she could enjoy it. He was a good boyfriend, and he had a good sister who loved him enough to help him learn. It was him that was thinking perverted thoughts about sinking his throbbing cock into her mouth and pussy. Stacy was just trying to make it realistic for him, so he’d be good at it, like she was good at it. She was so good at it.
Stacy released his cock. Trevor quickly removed his death grip on her ass cheek and blushed.