Temptation
The gang was hanging out at the beach after dark, all nine of them. One of the older guys had brought two whole cases of Lake Mud, a locally brewed beer. They'd started a small bon fire, then sat around in its flickering light, making jokes and teasing each other. One by one the various couples paired off and fell quiet, huddling close to whisper and giggle among themselves, or to just quietly cuddle and kiss. Brad grew more despondent with each moment, as everyone's boisterous nature succumbed to lust, and they all found satisfaction in their partners, everyone but he, Lisa and Cassie.
Brad could see Jason's hand up Bailey's shirt. Her eyes were closed and content. He could see Jason planning his next move, trying to figure out how and when to get Bailey away from the crowd. Brad had been with Bailey a few times last summer, and wished he'd moved more quickly this time. She wasn't as cute as Cassie or Lisa, but she loved oral sex. Jason had beaten him to it, before he had even realized it was a race.
Lisa and Cassie never sat together when their group gathered. Lisa wasn't sure how everyone else would react to a lesbian couple in their midst, so they played it cool, unless only Brad was around. Lisa usually sat beside Brad instead, with his sister somewhere nearby. Lisa seemed to like making people think that she and Brad were a casual item, to disguise her fling with Cassie.
Cassie stood up to get another beer from the cooler.
"You can come watch us tonight," Lisa told Brad offhandedly, once Cassie was out of earshot. She casually took a swig from her own bottle.
"What?"
"Come watch us," she continued, after swallowing the mouthful. She held the bottle near her lips, as if eager to drink more, but she waited to finish her explanation. "I'm taking Cassie down to that secluded spot at the corner of the lake. She still won't go down on me, but you can watch me make her come. It will be better than just listening to her. Or pretending your hand is hers."
She put her lips to the bottle, tipped it back, and poured in enough to bulge her cheeks, looking at his eyes the whole while, awaiting his reaction.
Brad didn't answer her. He just stared into space. Lisa was a good friend, and they'd shared their deepest, darkest secrets for years now. He knew about her pathetic suicide attempts and her bad poetry, and she knew about the time he'd been with a guy his freshman year at college, something no one else in the world was ever, ever going to know about.
They'd shared a little of everything, over time, but his lust for his little sister was probably his most shameful secret ever. She had guessed at it, teased him with it, but he still wasn't openly admitting to it.
"Look, you don't have to stay long," she said. "I won't even know you've been there, that you ever showed up. You know the spot. Just wait for Cassie and I to slip off, then follow us. If you want to."
* * *
Brad's heart was pounding loudly, at least to him. He didn't dare to get too close, to have Cassie hear him. Lisa had been right, he didn't want her to know he'd taken her up on her offer. He hovered in the darkness on the path, a short distance away, trying to peek between the trees and the undergrowth. Between that, the distance and the dark night, he imagined far more than he actually witnessed.
There was a large, flat boulder by the lakeside. Two summers ago he had lain naked on his back on that boulder as he watched Lisa ride his cock for the last time, before ending things the next day. The memory was painfully erotic.
His little sister had climbed onto it now. She lay on it on her back in the moonlight. She looked lovely.
Cassie had her knees bent and her ankles pulled up against her ass, with the soles of her feet flat on the stone and her knees spread wide. Her sun dress had been pulled up above her waist.
She almost always wore a loose shirt or dress over her bikini, even at the beach, to mask the smallness of her bust. Lisa had told him Cassie was embarrassed by her small tits, especially as the young women around her all matured and developed more fully, while she was left feeling like a little girl among them.
Lisa knelt on the ground beside the boulder, with her head buried between his sister's legs. Cassie had one hand in Lisa's hair, and the other crammed into her mouth in a fist to help fight back her charming moans.
She wasn't succeeding, but the girls were far away from everyone else. No one would hear anything through the thick woods. By now they were probably all making too much noise of their own, anyway, Brad thought sourly. No one could hear Cassie except Brad.
Brad wished he could see more. He dearly wished that he could clearly see her face. He imagined it contorted in agonized ecstasy, fighting to hold still as Lisa's tongue tormented her. He especially wished that he could see his sister's tits. He thought briefly, wistfully, that Lisa would strip her naked. Maybe Lisa could arrange something another time.
Brad quickly dismissed the thought. He could never, ever admit his lust for Cassie to Lisa, no matter how much she had guessed, or how obvious it was to her.
He stayed until the end, until his sister was spent and quiet, softly whimpering in Lisa's strong embrace, before slipping away.
* * *
"I could actually arrange for you to fuck her, you know," Lisa said in an absurdly casual tone. They were walking together up the steep road beside the lake, heading to the corner store together to pick up the morning paper. Cassie was back home, sleeping in.
Brad had made his trips to the boulder a routine, regularly watching Cassie and Lisa together each evening. But the thought of fucking her was ridiculous, and Lisa knew it.
Brad looked at her long and hard. He couldn't tell if she was serious or teasing him, or trying to trap him into saying something revealing. Every day she seemed to take this one step farther. He had no idea how she could even pretend be so blithe about the idea. Lisa was a real work of art sometimes.
