That night Damon waited until he could hear his father's loud snoring from across the hall and smiled to himself. He slipped out of bed, stepped over Ares, who was sleeping in the middle of the floor like he always did when Damon was home, and quietly made his way down the hall to Denise's room and slipped inside. He found Denise with just a bedside lamp on waiting for him.
"Took you long enough," she said, "I was about to get started without you."
"I had to wait until I was sure dad was asleep." Damon said, quietly closing the door behind him.
Denise threw the covers back to reveal she was already naked, Damon smiled and kicked his shorts off and slipped into bed with her. They wrapped their arms around each other and locked lips, Denise pressing her body into Damon's.
"Even if our parents are heavy sleepers, we still need to be quiet." Damon said, once they came up for air. "They are right in the other room after all."
"I know, but I don't know if I can wait until we have another moment alone," Denise said, "After all we did earlier today, all I've been able to think about for the past few hours is getting fucked by you."
"Fucking you is all I've been able to think about too," Damon said, sliding his hand between Denise's legs. "But I want to taste you again."
He slid down her body and Denise willingly spread her legs for him and moaned quietly as he started to slowly run his tongue around her pussy lips. Damon loved the way she tasted, especially now without the water from the shower to dilute the taste. Denise covered her mouth and went wide eyed as Damon licked and sucked on her sensitive clit, biting back a groan of passion.
As much as Damon wanted to spend more time with his face between his future step sister's legs, his cock was aching with anticipation. He moved back up Denise's body and kissed her again.
"You ready?" he asked her.
She nodded, anticipation all over her face. "Fuck me Damon."
Damon guided his cock into Denise's steaming hot, soaking wet pussy. She bit back another cry of pleasure as Damon's thick cock entered her. She still couldn't believe how big he was compared to her boyfriend. Damon was amazed at how tight Denise was, but he supposed it was because she just wasn't used to his size yet. Alicia was the same way their first time, she also hadn't taken a cock as big as Damon's. Now, of course after two years of getting drilled by the Quarterback Killer, Alicia was used to her boyfriend's huge cock.
"It's... oh my god..." Denise gasped.
"Are you okay?" Damon asked, stopping when he was about halfway in.
Denise nodded and took a breath. "You... you're so big... I feel like you're gonna split me in half. At the same time it feels really fucking good. Just give me a minute, go slow."
Damon slowly inched the rest of his cock into Denise and could feel her relax her pussy muscles as he finally got all eight and a half inches into her.
"How does your girlfriend take this?" she gasped.
"She's used to it by now," Damon said, "After all, it's been two years."
"We could just lie here like this and I would be happy." Denise said, "But I want you to fuck me. Just, like I said, take it slow."
Damon pulled back until just the head of his cock was inside her, and then slowly slid all the way back in. He started to slowly fuck Denise knowing that just a few feet away on the other side of the wall behind him his father and Denise's mother were sleeping.
Denise tried not to tense up every time Damon slid inside her and she could feel Damon slowly start to pick up the pace. Not by much, but enough that it didn't feel like he was going in slow motion. Little by little she got used to his girth, and as she looked up at him, she felt a deeper connection to him than she felt with her boyfriend. She couldn't explain it, but it was there. She had made her boyfriend wait almost three months before she let him fuck her, but she had only made Damon wait a few hours, there was just something about him. It wasn't just his good looks, his chiseled body, or his impressive tool, but there was something deeper, something that she couldn't put into words.
Damon felt the same way, he and Alicia had gone two months before they officially started dating and another two months before they first had sex. Like Denise, Damon was thinking there was something beyond the physical that connected them. He looked down at her and knew that no matter what they would be connected by more than just the fact that their parents were getting hitched and the sex.
They both pushed those thoughts out of their heads and concentrated on how good the sex felt, because it did feel amazing. They were both doing everything they could to keep from making noise (Denise usually was pretty loud when she had sex with her boyfriend) because they wanted their parents to remain oblivious.
"Damon," Denise said, "Fuck me from behind."
Damon reluctantly pulled out of his future step sister and she rolled over and got up on her hands and knees. She looked back over her shoulder at Damon, whipping her purple hair out of her face. Damon moved up behind her, looked at her pleading green eyes and penetrated her from behind. Denise bit her lip and moaned quietly, as she again had to get used to the size of the cock her future step brother possessed. Damon grabbed her hips and started fucking her with a little quicker pace than before as it already felt like Denise was getting used to him.
"God, Denise, you feel so fucking good." he said.
"So do you," she moaned, "I've never had a cock go so deep inside me. I've never been fucked like this before."
She bit her pillow and moaned as Damon continued to give her the best fucking of her life. She knew this wasn't going to be a one time only thing, she'd make sure of that. They had the whole summer ahead of them, and Denise was going to make sure she fucked Damon as much as she could. She was pretty sure he wouldn't object.
Then she felt it, that tingling deep inside her that meant she was about to cum. She moaned low in her throat before biting the pillow again and muffling her orgasmic moans as she came. Damon felt her pussy contract around his cock and heard her muffled scream. He could feel her juices leak out of her, adding even more lubrication to her already wet pussy.
She moved forward pulling herself off the huge cock that was filling her, as she felt her juices run down her thighs. She collapsed face first on the bed before rolling onto her back. She held her arms out to Damon, and he filled her arms as their lips met.
"That was one of the most intense orgasms I've had in my life." she gasped, trying to catch her breath. "Now it's your turn. Fuck me with that huge fucking cock of yours. I wanna feel you cum inside me, don't worry, my mother's had me on birth control since I was eighteen."
Damon easily reentered Denise's wet, warm, stretched out hole, and fucked her for all he was worth. They were both covered in a thin sheen of sweat, and their bodies glistened in the dim light of the lone bedside lamp that was the only illumination at the moment. Damon found it easier to pump his cock in the wet folds of Denise's well lubed pussy now, and could already feel his own orgasm rushing up on him. The combination of Denise's perfect body, the warmth of her cunt wrapped around his pulsating tool, the taboo of how "wrong" this might be, and the fact that their parents were just on the other side of the wall was too much for Damon to take, and he bit back a groan of pleasure as he drove his cock all the way into Denise and exploded inside of her.
Denise squealed in surprise as she felt Damon's cock throb and expand inside her as he unloaded the contents of his balls inside her. Jet after jet after jet of cum flooded her cunt, until she could feel it combine with her own juices -- her "girlcum" as she called it -- and flow out of her.
Finally Damon was drained dry and slowly pulled out of her and rested his head on her chest, Denise gently cradled his head and they lay there for a long moment, listening to the muffled sounds of insects and birds outside.
"That felt so good." he finally said.