Chapter 6

It had been a week since Corey had fallen asleep in Addie’s bed. After that close call, the two siblings agreed to be more careful going forward. They would try to resist getting together late at night unless there was no parental break in sight. It was difficult for the two of them, both wanting to continue their physical relationship and explore further delights together. The reality, though, was they were brother and sister, which would carry a steep penalty should they be caught.

The two would tease and joke around like they always used to do, but there was a longing buried beneath the surface. When their parents were home, they would play games together and make little games of sexually teasing the other. Addie would flash him her panties, and Corey would pull out his erection when they were somewhere safe. It was fun, but didn’t provide the needed release that both of them required.

Sometimes, at night, Corey would find the used pair of Addie’s panties under his pillow. He’d sniff them, then use them to masturbate, using the inside of the soft material for friction. He did his best not to cum on them though, since that might alert suspicion to what they were doing. He wished he could do something for her, but there was little she needed. She would just dip her fingers inside herself at night, wishing it was her brother’s cock thrusting into her, but it was a bleak substitute.

Corey couldn’t even get relief from his girlfriend, Tina. They’d only been able to go out once more since their date to the movies and then the quarry. Their last date was at Tina’s house, watching a movie with her parents. It was nice, since they liked him already so there was little pressure. The two of them cuddled on the couch while her parents sat in armchairs. Halfway through the movie, Tina sneakily complained about being cold, so Corey put a blanket over both of them.

Under the blanket, the two of them let their hands wander. They had to be careful not to alert her parents, but Corey was able to get his hand under her shirt and massage one of her breasts. Tina reached between them and rubbed his stiffening cock through his jeans. It was fun and naughty, doing stuff a few feet from Tina’s parents, but they both wanted another real date! And this weekend could be the opportunity they needed.

It was going to be a warm summer’s day, and Tina had the idea that she and Corey should spend most of the day together. Tina’s parents were actually ok with this, but suggested she not abandon her friend, and Corey’s sister, Addie. The two girls hadn’t really spent too much time together since Tina and Corey started dating, and it did seem like they should all do something together.

Since the weather was going to be warm, Tina suggested they all come over to her place and go swimming for a few hours. After that, she and Corey could drop Addie off at home before they went for a hike and picnic on some of the local trails. Corey wasn’t sure what Tina’s goal was with these activities, but she had proven to be cunning and sly in the past, so he trusted her judgment.

Corey and Addie showed up to Tina’s place just before 10:00am. It was already heating up and everyone went to change into their swimsuits. Corey used the nearby bathroom while Tina and Addie went up to her room to change. Corey would have loved to be a fly on the wall of that bedroom, and watching two sexy girls undress and change into their swimsuits. He had to mind his thoughts, not wanting to have an awkward situation on his way to the pool. He packed up his clothes and grabbed his towel, waiting for the two girls to head outside to the pool.

Like most guys, Corey waited longer than he thought necessary for the girls to change. When they finally met him at the door, they were both wrapped in their towels. Tina led the way, opening the glass sliding door and heading to the large inground pool. It had a diving board and a slide, with a shed to house the pump and all the pool toys and supplies.

Corey threw his towel down on a lounge chair and turned to look at the girls. His eyes nearly popped out of his head. Tina was wearing a small white bikini with little pink hearts all over it. The small triangles of material barely contained her breasts, and the bottoms were cut very high along her thighs. Addie’s suit was a little more modest, but still sexy. It was a blue bikini with black highlights along the edges. The triangles didn’t have as much to struggle against, but they still showed off a decent amount of side-boob. The bottoms were lower cut but were tight against her skin, giving her a noticeable cameltoe. Corey decided to jump in the pool quickly to hide his erection.

“Told you he’d like it,” Addie said to her friend.

“Seriously, I didn’t expect that good of a response,” Tina replied giggling.

“Are you two going to chat all day or are you going to join me?” Corey prodded, trying to hide his embarrassment.

“Be there in a minute,” Tina replied, heading into the pool shed and pulling out a couple of inflatable rafts and floaties.

“How cold is the water?” Addie asked, moving to the edge of the pool.

She tried dipping her toes in, but Corey reached out, grabbed her leg and pulled her into the water with a big splash. She came up coughing and spitting water, before splashing her brother. Tina crumbled to the ground laughing at the two of them. Both of them stopped their water-war with each other and turned to the dry girl on the side. Simultaneously, they took big swings with their arms and splashed Tina with cool water, soaking her.

Her hair soaked, Tina stood up and made a wild run for the side of the pool. She hit the edge and leapt high up in the air, tucked her arms into her legs and cannonballed directly between Corey and Addie, swashing both of them. Corey and Addie wiped the water from their faces as Tina surfaced in front of her boyfriend. He reached out and pulled her in for a quick kiss, as his hands roamed over the bottom of her swimsuit.

“Hey, knock that off!” Addie yelled playfully, splashing both of them. This was an act of war against the teen couple, who chased the blonde down to the shallow end of the pool and dunked her underwater. Addie tried to grab onto something and grabbed hold of Corey’s semi-hard dick through his shorts. Luckily, it was deep enough that Tina couldn’t see it, but it quickly stiffened him up.

There was a lot of secret petting and touching going on under the water. At different points, Corey felt a hand rub up against his cock. He had to look around to see which of the two girls was the culprit. He took advantage of the situation too. On several occasions, he ‘accidentally’ brushed up against a breast or ass while swimming. Sometimes it was Tina and other times it was Addie. They’d all wrestle and splash each other, and take turns dunking each other under the water. It was the perfect opportunity for some sneaky and cheeky touching.

On one occasion, Corey let Tina push him under. He pushed his face forward, so it slid down the front of her suit, passing over her breasts and stopping underwater by her crotch. He stayed underwater for a few extra seconds, letting his tongue slide over the stretchy material covering her pussy. When he surfaced from the water, Tina gave him a look and a little wink.

Addie, not one to be left out, asked Corey to lift her up onto his shoulders. Corey sat down on the edge of the drop-off from the shallow end and his sister positioned herself behind him. Her legs went over his shoulders and her pussy was pressed against the back of his head. He stood up, lifting her out of the water. He could feel Addie subtly grinding her twat against the back of his head. He leaned forward for a second to readjust, but she lost her balance and flipped over his head, splashing into the pool. Tina roared with laughter and wanted a ride herself.

It had been a few hours that they’d been swimming and Tina had given Corey a signal that they should probably start getting out so they could continue their date alone. Corey and Tina climbed out of the pool and started drying off, but Addie wasn’t ready for things to end quite yet.

“Awww, come on guys. One last game, how ‘bout a diving contest?”

“I don’t know, Adds,” Tina replied, “Corey and I still have the rest of our date to get to.”

“Don’t be chicken, come on. Corey? You know I could beat you, that’s why you won’t accept,” Addie goaded.

“And what if I said yes? What are the stakes?” Corey answered, never one to back down from a challenge - or an opportunity.

“Winner gets to tell the losers what to do for the rest of the day,” the blonde offered.

“Deal!” Tina said, jumping in.

“One jump each, and we decide the winner as a group. Someone records the dive on my phone, and we all watch them back-to-back-to-back to compare,” Tina said confidently.

They all agreed. Addie decided to go first, then Tina picked up her phone and hit record. Addie ran on the board, jumped on the end for some bounce, and leapt off. She got good height, folded in half, and touched her toes, before straightening out and diving cleanly into the water. Corey and Tina both had to admit that it was a good dive.

Corey went next, he stood on the end of the board and bounced a couple of times. He was trying to get a good feel for it. Once comfortable, he leapt off and did a backflip, and plummeted into the water. He made a pretty big splash, but it looked good on camera.

Tina handed Corey her phone and took her position. She also did a running start, planted her feet on the end of the board, and leapt high into the air. She did a half twist, touched her toes, and elegantly landed in the water with minimal splash. When she emerged, Corey’s eyes went wide. In the course of hitting the water, Tina’s top had come loose, and her glorious breasts were exposed. Her pink nipples were hard from the cool water, and it took a few seconds for her to realize something was off. She quickly sunk back down under the water and moved the material over her tits before standing back up.

“Very nice Tina!” Addie roared with laughter.

“They were very nice,” Corey said with a smile, turning off the record button on Tina’s phone.

“Whatever, perverts,” Tina said sarcastically, getting out of the water. “Who won?”

“My vote is for you, Tina.” Corey said.

“Yeah,” Addie grumbled under her breath. “Tina wins.”

“Great! My first demand is we all dry off so we can have the rest of our date, Corey.”

It took about twenty minutes for the three of them to dry off enough to go inside and change. Corey changed back into his clothes and waited for the girls to finish up. When Addie and Tina met up with him, Tina was wearing a thin yellow summer dress that looked great on her. It was loose on the bottom, flowing as she moved, but the top was showing some nice cleavage. Tina had packed a bag with some snacks for their little hike and handed it to Corey to carry.

Addie looked a little sour, having lost, but also being dumped off so her brother and best friend could go off alone. They drove back to the house to drop off Addie before heading to the nature trail. Addie grumbled goodbye, entered the house, and the other two headed off for the next leg of their fun. However, Tina was worried about Addie.

“Why was she acting so upset?” Tina asked.

“You know she hates losing. Maybe she’s just being a sore loser,” Corey replied, hoping it was only that simple.

“You’re probably right but I’m just worried she might not like the idea of us together. I don’t want to lose her as a friend because of our dating.”

“I know, I would feel terrible if that happened, but I think it’s just Addie being Addie. Don’t worry too much about it, I’ll talk to her when I get home and she’ll be fine. Let’s just have fun today and not let her sour mood ruin it,” Corey said, putting his arm around the younger girl.

“You’re right. And I’ve got plans for you, mister. Remember, you have to do what I say,” Tina said with a laugh.

Corey nodded his understanding but, in his head, he couldn’t help but think this sounded a bit too familiar. He hid a smile, thinking back to his first occasion being his sister’s servant and wondered if he’d be lucky again today. As they pulled into the quiet parking lot, that thought became a strong hope.

The two got out of the car and Corey picked up their picnic bag. They headed towards the nature trails and stopped to look at the map. The park was a small forest reserve that had several easy nature trails on it. There were a few specific landmarks to look at, but the main draw was a small lake in the center of the property. It was popular with anglers and some recreational paddlers. There was a road that led to a boat launch, but little else in terms of facilities.

“Which trail do you want to do?” Corey asked, checking out Tina’s ass as she bent over to look at the trail board.

“Let’s go around the lake. I think there’ll be a few nice spots to stop and eat,” she replied. As she turned, she saw her boyfriend checking her out. “Like what you see?” Tina joked.

“You know it!” Corey said, giving her ass a little squeeze over her dress.

“Mmmm, I could let you do that all day, but let’s get started before the lot gets busy.”

The two started their hike, walking along under a canopy of trees. The light filtered in through the leaves, making sunbeams in the denser sections. The whole loop of the lake was just over three miles, over small rolling hills. There was a flat section near the midpoint which Corey thought would make a great picnic spot.