Jack peaked through the kitchen window, scanning the backyard until his eyes came to his stepsister Kathy and her best friend Richelle. They were sunning themselves on the chaise lounges near the back fence. It was the first Monday of summer vacation from school, and both of his parents were at work, leaving "the kids" to enjoy the first day of their break alone. Both now 18, Kathy and Jack had been stepsiblings for about five years now. Jack's mom and Kathy's dad had been an item for two years before they got married. Jack never knew his father and Kathy's mom had been in and out of rehab for Kathy's whole life.
Jack went back to his room and changed into his swimming trunks. He planned to invite himself into their little sun session and continue with his attempts to ingratiate himself with Richelle, having had a crush on her for several years now. She was pretty, about 5' 6" tall with a slender body and lithe legs. She had nice breasts as well, medium-sized and bouncy, judging from the views he sneaked when she walked around their house without a bra underneath her various tops. She wore her blonde hair straight and long, down to the middle of her back.
His stepsister Kathy had a similar body as Richelle, though she had more of a classic, "girl next door" vibe to her. She rarely wore much makeup and had a smile that could light up a room. Her brown hair was nearly as long as Richelle's, though it was wavy. Jack didn't want to admit it, but he had a slight "thing" for his stepsister as well. She was cute and funny, and he enjoyed her company. He just thought that due to their relationship, there would never be a chance of anything happening there. While she did occasionally creep into his late-night fantasies, he mostly tried to focus on Richelle, figuring she was the more attainable of the two.
However, considering her social status at school -- she had been a cheerleader after all -- and Jack's shyness, something with Richelle was unlikely to ever happen. Not that Jack was homely. He had grown to 6' tall, with a moderately muscular build due to the home gym his family had set up in the garage, and had brown hair over his blue eyes. It was just his personality...he was too quiet for most of the girls at school, wasn't a jock and his grades were too good, so he was deemed a bit of a nerd.
Taking one last deep breath to shore up his nerves, Jack opened the screen door out to the backyard and stepped into the summer's heat. Trying hard to remain bold, he strode over to where the girls were lying down.
"Mind if I join you?" he asked.
Simultaneously, both girls raised their heads, lowered their sunglasses, and looked at him without saying a word, as if judging him. At least he felt judged. Jack found himself quite nervous now, definitely felt like he was intruding, and quickly began formulating an escape plan. Kathy was the first to break into a smile, noting how nervous he was and finding him charming as usual. Richelle was smirking a little bit as well. It was as if she could sense the fear in him. She was a predator, and he was the prey...maybe...if she ever felt like pouncing on him.
Before he could step away, Kathy said, "Of course brother dear," she said with a laugh. "You can join us."
Richelle piped up "But it may cost you to stay here with us", she smiled wickedly.
Jack swallowed hard and nodded a 'thanks' to Kathy before spreading a beach towel out on the chaise lounge next to his stepsister. He lay down on his chest, facing away from the girls, hoping by his mere presence he might find a way to 'man up' and figure out a way to impress Richelle somehow.
The girls turned to one another and waggled their eyes at one another, eyes talking in some sort of unspoken girl talk, and giggled softly to one another. Then they went back to their sunning session while chatting a little bit about future school plans after the summer ended. Jack heard Richelle speak of attending a university to the south, about six hours away. She was excited, of course, that she would be trying out for the cheer team and shared what classes she hoped to enroll in. Kathy would be attending the state school here in town, as her parents didn't have the finances for the larger university. Despite his good grades, Jack would be attending the same school as his stepsister. He did get a few small scholarships based on his grades, but not enough for a university like the one Richelle was due to attend.
After a while, Kathy looked over at Jack and noticed he was starting to burn. "Jack," she asked, "did you not put on any sunscreen before you came out?"
He mumbled something, cleared his throat, and said, "No...have I been out here too long?"
Kathy grabbed her sunscreen and rolled off the chaise. "Not yet," she replied, "but without some sunscreen, you're gonna burn soon. Here, let me put some on you."
She sat on the edge of his chaise and squirted some sunscreen onto his back. As Kathy began to rub the oily cream into his skin, she found that she enjoyed the feeling of her hands on him. It was a rare thing as she usually avoided touching her stepbrother. A few years ago, she had started noticing the pleasure she took in touching him and it made her feel ashamed. She shouldn't enjoy caressing him like that. He was her stepbrother after all. It was taboo,
'Wasn't it?'
and should be avoided. She couldn't evade him entirely of course, as their bedrooms were next to each other, but she had to do something to bury these feelings that were causing her such turmoil inside. Kathy had to work at avoiding him since she couldn't entirely trust herself while in his presence.
However, she now found herself confronting her fears, sitting close to him on the chaise and rubbing the sunscreen over his back. While not buff, her stepbrother was somewhat muscular, and she found pleasure in rubbing his toned body. Her hands traveled up to his neck, across the shoulders then down each arm. Then, they'd travel back up to his neck before moving down his spine until they reached his waist. At that point, Kathy's hands would move to his sides before swirling up to his shoulder blades before repeating the entire route.
Jack, for his part, noticed his stepsister's extra attention. She had gone long beyond merely covering him with sunscreen. At first, he lay there with his eyes closed and imagined it was Richelle touching him. The thought of her hands on his body excited him and he detected blood flowing to his penis, giving him a bit of a chubby. But when the fantasy of Richelle suddenly disappeared and the reality of Kathy took over, he grew nervous. It was one thing to be discovered getting hard for Richelle, quite something else to be exposed for getting hard for his stepsister. Jack froze in place and silently willed his erection away.
It wasn't working.
Richelle watched her friend rub the sunscreen onto Jack's back. She noticed her friend's overly affectionate attention to her stepbrother's body. There was a blissful look on her face as her hands rubbed his hard torso. Richelle looked at Jack and saw his eyes closed and a slight smile on his lips. She found herself a little envious but couldn't decide why. Part of her wished it was her hands on Jack's back and a part of her wished it was Kathy rubbing her body.
Throwing caution to the wind, Richelle finally called out, "When do I get a back rub?" She decided she didn't care which one put their hands on her back, she just wanted to be pleasured.
Both Jack and Kathy were jolted out of their reverie. Kathy quickly and nervously moved back to her chaise and laid down on her front, eyes nervously on Richelle.
"Guess that means you, Jack" Richelle smirked. "Get over here and get to rubbing!"
Jack was caught in a conundrum. On the one hand, he had long desired to get his hands on the beautiful Richelle and here he had an open invitation to do so. On the other hand, he now had an erection. He didn't want either girl to know he had gotten a hard dick over the feel of his sister's hands rubbing his body. He was twisting on the decision when Richelle forced his hand.
"C'mon Jacky-boy," she chided, "get over here and get busy!"
Jack hated that nickname.
'Someday, she'll be calling me something else!'
he vowed.
Grudgingly, he stood up. Richelle couldn't help but see the tent in his swimsuit and her eyes and mouth opened wide at the sight. She liked what she saw, but the realization that Jack's sister had been the cause of that tent shocked her. Her eyes darted to Kathy, who was watching her and curious about what had caused her friend to gasp.
'Oh, this is going to be delicious,'
Richelle thought. She had always been a devilish instigator.
'How am I going to have fun with this?'
