Dave traced his index finger down Jillian's flushed and sweaty face. He leaned in and placed a gentle kiss to her lips as he reached up and removed the blindfold.
Jillian's eyes opened and squinted to adjust to the lighting of the basement. Her arms were bound above her head, the balls of her feet resting on the floor and her heels were unable to reach.
Dave reached up and unbound her wrists from the beam above, lowering her safely to the floor. Jillian took a couple of deep breaths and looked into her boyfriend's eyes.
"I don't know what's changed in you. But is this what you want?" She asked.
"Baby, I just wanted to add some spice into our sex life. We've been together for quite a while now and sex was becoming pretty basic." He responded honestly.
Jillian nodded and walked past him, grabbing her clothing and entering the bathroom in the corner of the room.
Dave quickly looked down the other end of the room, where a panel door opened and Jillian's younger sister, Corrie, appeared. She was staring at him with sensual eyes. He noticed her hand was down her pants and very busy.
She pushed her sweat shorts down with her other hand, and they fell to her ankles with little resistance. She tilted her head to the side and licked her lips as she gazed upon her sister's nude boyfriend.
Dave, quickly becoming aroused again, glanced over at bathroom door to make sure Jillian was still occupied. He looked back at Corrie, who had removed her shirt and stood nude in the doorway just eight feet away. Luckily, a wall blocks the view of any on comers who may show up, more specifically, Jillian if she were to come strolling out of the bathroom.
Dave reached down and began to quickly stroke his rapidly growing erection as he watched the very attractive younger sister of his fiance' pleasure herself in front of him, again.
------------------
It started a month ago. Dave was over for dinner with Jillian and her family, which consisted of her mother, her older sister Megan, and her younger sister Corrie. It was a regular occurence most weeks with the routine being Dave staying over from Thursday until after dinner Monday. Since he and Jillian have been together for the better part of nearly three years, it was more than acceptable for Jillian's family. The family was very fond of Dave. They all got along very well
Their mother was single for much of their lives. She spent the majority of her time working and tending house. Since her husband left, she focused more on just being a family with her three daughters, and never cared much for the dating scene.
Megan, the older sister, was always busy with work and she never moved out. She was short and curvy, much like her mother. She was somewhat attractive but was always dressed so conservatively and never had much of a social life. She was single with no intention of dating any time soon.
Jillian was the only one to go away to college. She didn't stay away long and transferred to a local university and moved back home. Jillian is completely opposite her mother and older sister, as she was tall and slender, rather than short and curvy. She works and attends college at night. She will be getting her degree to become an elementary school teacher. Dave and Jillian were friends since grade school. They always hung around together, doing everything together, and were even each other's first real kiss in their adolescent years. They never really officially dated until Jillian transferred back to the local college. She was home visiting one weekend and they ran into each other. Both had grown up immensely since they had last seen each other at graduation. Natural attraction took its course and they hooked up and decided to date.
And then there was Corrie, the youngest sister, who had just graduated high school and would be attending Community College in the fall. Of the three sisters, Corrie was the most attractive. She was short, barely eclipsing five feet in height, with proportionately curvy legs, and rounded bottom, a beautiful face, and improportionately large breasts for her stature. She had the beautful face like Jillian, the stature and curves of Megan, and mammoth breasts like her mother. She always admired Dave and looked up to him. Since became part of the family traditions, they had gotten close. With no brother in the family, Dave was embraced in that role, especially for Corrie.
There was nothing especially different about this Friday night. Following the after-dinner coffee, Jillian's mother and Megan both retired to their rooms. Corrie, who amazingly enough, didn't have much of a social life given how incredibly attractive and vibrant she was, had disappeared, presumably to bed, as well. Jillian and Dave retreated to the basement where they would drink some wine, watch their favorite shows on tv or catch a good movie.
Halfway through the movie, Dave and Jillian began to kiss. This led to the usual sex they had. Dave eventually got Jillian out of her clothes. He then had to undress himself. That's just the way the conservative sexual encounters worked. Jillian, who wasn't a fan of oral sex, lay back and Dave slithered between her legs and entered her. He would kiss her occasionally as he would slide in and out of his girlfriend. Jillian would breath heavily but rarely moan.
Something suddenly caught Dave's attention. Something moved in his peripheral vision. He glanced over at a door that leads to the second room of the basement, and the adjacent window. What he saw caught him by surprise. It was Corrie. From what he could tell, since the window was about 10 feet away, her eyes were closed and her head was back.
She's watching us.
Dave was completely shocked at what he was witnessing. He looked down at Jillian whose eyes were closed as always.
This is getting boring.
Dave suddenly had an idea. This hot, younger sister wants to watch. He'll give her something to watch.
Dave leaned up on his knees. Jillian's eyes opened as she was wondering what was going on.
Dave slide his arms behind her knees and pushed her legs up and back, spreading his girlfriend open before mounting her. Dave stared down to her as he proceeded to drive himself into her.
"Uhhhh" Jillian let out at the surprise of this sudden change.
Dave grabbed a hold of her shoulders, and leaned close to her, completely pinning her to the couch, his lips nearly touching hers. He stared into her widened eyes as he pounded her unmercifully.
"Uhh.. Uhhhhh. Ahhhh. Ahhhh." Jillian was moaning.
Dave, conscious to the fact that Corrie was watching this display, turned his body slighly so the young voyeur would get a better view of his erection invading her big sister.
Jillian tried to adjust from beneath him but this prompted Dave to push her legs back further. He had his girlfriend folded in half, her feet pressed down on the couch next her face. His forehead met hers and though it seemed impossible, Dave pounded into Jillian even harder and faster.
His curiosity got the better of him. He had to figure out a way to see what Corrie was doing. He suddenly stopped. He let Jillian's legs fall to the sides. He withdrew from her and roughly turned her over to her stomach. This movement gave him a chance to quickly look over to the window.
Corrie was watching with wide eyes. She looked almost mesmerized by what was happening.
Dave brought Jillian up to her hands and knees and pressed himself inside her from behind. Without delay, he drilled into her with fury. The TV no longer drowned out the sound of flesh slapping together.
