Ever since they graduated high school, Vince and his stepsister, Heather, had been... well... fooling around. It had started innocently enough, underneath the mistletoe at their family Christmas party, with a kiss that went too far. All their parent's friends and neighbors were over, drinking, eating, and laughing long into the night.
Vince noticed she was accidentally standing in the archway where the mistletoe was hanging and jokingly mentioned it.
"Oh... I didn't notice," Heather laughed. She felt uncomfortable at the party, not knowing anyone and generally not good with groups of people.
"Well... you know you have to kiss me, right?" he asked, stepping forward until he was right in front of her.
"But... you're my stepbrother," she protested weakly.
He smiled. "So? It's just a little kiss. It's tradition."
"Um... ok," she said, a little embarrassed and shy.
Vince leaned forward and pressed his lips to hers. It was a chaste kiss, a kiss between siblings. But there was a spark. He moved back an inch for just a moment, but then pressed forward again, touching her lips again, this time for longer, his hand moving to hold her hip, moving to hold her to him. He felt her tongue caress his lips and opened his mouth to readily accept it, greeting her with his own.
The kiss took them somewhere else, somewhere that neither of them had ever expected. When they realized that the party was going on around them, they broke apart again, apologizing to the other, but both knew that kiss meant something. They were both embarrassed, but they both were excited.
Luckily, no one at the party saw them.
They both separated afterwards, meandering about the party, trying to process their emotions. After midnight, the night had proven too much for them and they disappeared into his room to talk. And, after a couple hours, they fell asleep.
Vince woke up first, and just looked at his stepsister, remembering their kiss. It surprised him how good it felt. She was his stepsister... he wasn't supposed to have these kinds of feelings for her. But he couldn't help it. She lay next to him, turned towards him, her body hidden underneath the covers.
"Oh... uh... good morning," she said, waking up at last. She looked around and realized where she was. "I guess I fell asleep in here." She yawned and stretched her arms over her head, her t-shirt tightening around her breasts. "Oh, excuse me," she said, covering them with her arm, embarrassed.
She lay back again, propping her head up on her hand. "It was uh... it was really good to talk to you last night. To... talk about how we're both feeling and about this new family situation."
"Yeah... we were kind of thrown together," he said. Their parents hadn't even been married for 6 months.
"It was nice to just kind of bond a little bit," she admitted. "I know our parents really wanted that for us and we really haven't taken the time to do it. Hopefully they'll be pleased that we got to talk... and laugh... and bond. It was pretty nice."
She ran her hand through his hair, playfully. "You're a good guy. I think I'll like being your stepsister. So... what do you say we wake mom and dad and go open presents. What do you think? Does that sound good?"
"It's not even Christmas day, yet," he said, laughing. "You're a little over eager aren't you?"
She sat up and threw the blankets off her, but off him as well. Vince was wearing a pair of pajama shorts and a t-shirt, but his erection was obvious, tenting his shorts. He tried to cover it up by pulling his t-shirt down, but she couldn't help but notice.
"What do you mean... whoa... what's going on down there?" Heather said, giggling, distracted suddenly by his erection.
"It's nothing," Vince said, embarrassed.
"Morning wood, huh?" she giggled. "Ok... that's awkward. I didn't really anticipate that happening. That's gotta be a little embarrassing for you... waking up next to your sister with morning wood."
She reached over and pulled the front of his shorts down a little, exposing his cock, and giggled. Vince moved her hand away and covered it up again. Back and forth they played the game, giggling and laughing.
"You keep trying to cover it up but it's not going to go away," she said. "It's not going to go away until you do something about it." She got out of the bed and stood beside it. "I guess I should leave and let you take care of it."
Vince, feeling a little playful and bold, left his shirt pulled away and grabbed his cock, stroking it slowly, right in front of her.
"Wow... uh... it's pretty big," Heather mumbled, staring at it. "How'd that happen, huh? Guess you lucked out and got some good genes."
"Yeah... I haven't had any complaints. But it tends to get hard at inappropriate moments," he said. "And that's a bit difficult to deal with."
"It's pretty embarrassing for you, huh?"
"You could say that."
"It's not going away, either. Do you like being embarrassed or something... or are you just turned on by me?" she asked, smirking.
"I admit it... it's you," he said. "It's your fault... and maybe you should help me get rid of it."
"I don't know... I don't really think I should be helping you with that," she said, climbing back onto the bed, on her knees. "I think that's beyond the scope of my responsibilities. I don't think mom and dad had this in mind when they wanted us to bond."
Vince slid his hand up and down his shaft more, jerking it, feeling it grow even bigger and harder.
"Oh my... getting a little aggressive about it, aren't you," Heather said. She moved closer to him and put her hand on his thigh. "I guess I could... touch it... a little. Maybe help out a little." She wrapped her fingers around his shaft, replacing his hand, and began stroking him.
"Oh... you really... that's a lot of precum," she said, sliding her finger over the head, swirling the oozing liquid over it. "You must be one horny boy, huh?"
Vince moaned. "I am a bit of a horny boy, I'll admit it. But you're too damn sexy."
"So... is this normal for you in the morning or are you just horny for me?" she asked. "I think this might be a little something extra, huh?"
"Well... I can't stop thinking about that kiss... and you are practically wearing nothing. I can see your nipples right through your t-shirt. And I can see your panties. That does tend to make me a little... excited."
She giggled. "Maybe I was... you know... hoping for a little more when I came in here last night."
"Yeah? I guess I'm an idiot. I didn't read that right," he admitted.
"Well, that's ok," she smiled. "You can make it up to me. Right now... I guess I could take care of this for you. We have to keep this a secret, though, ok?"
"Yeah... it's our secret."
"I like that you're so horny for me. It's a pretty big turn-on," she said. She grabbed the elastic waistband of his shorts and started tugging them down his legs. "Let's get these pajama bottoms off." She crawled down the bed, helping to pull them off his legs and then looked back at him. Vince's eyes were glued to her ass.
"I thought I noticed you spying on me before." She moved her t-shirt to make sure her ass was completely exposed to his sight. "Is this what you were looking at? Huh? Were you looking at my ass?"
"Whew," Vince breathed hard, getting a good look at her beautiful, hard ass. "Yeah... I was..." He squeezed his hand on his cock a little more, stroking a little slower. "You have a nice ass."
"You like my booty?" she giggled, bouncing it a little. "Wow... I never thought I'd be turned on by my stepbrother being turned on by me. But... it's kind of fun... and it's pretty naughty." She sat up on her knees and grabbed her panties at her hips, pulling them down and off.
She turned towards him again and crawled up beside him, taking her t-shirt off.
"Does this turn you on, stepbro? Are you getting really hard for me?"
Vince groaned as he looked at his naked stepsister. God, she was beautiful and sexy. Even her breasts were perfect, a B-cup with hard, little, pointed nipples. "Fuck," he whispered.
"I don't think it's working," she giggled, grabbing his hard shaft again and stroking it. "I think you're getting harder. I bet you want to cum... don't you?" She bent down and licked the head, then wrapped her lips around the head and sucked on it.
"Oh my God," Vince moaned. "That feels so good."
"Does it turn you on to think about fucking your sister?" she asked, sucking and stroking his cock at the same time.
Vince groaned. "You can't imagine. I want to so badly. You turn me on so much."
"Mmmm... such a yummy cock." Heather kicked a leg over his so that she was straddling it and pushed her hips down until her hot, wet pussy made contact with his flesh. Then she started sliding forward and back, grinding into his leg. "I bet you've been fantasizing about me since you met me. Huh?"
"God, yeah," he admitted, reaching out and taking hold of her breast, squeezing it. He pinched her nipple between his fingers and lightly pulled it, making her moan.