Lets do it!

Jace cracked a grin and said, "Of course Kelly, all that fighting back there has gotten me hot too! Ever since we left the old man's basement I have been dying to fuck you again."

As Kelly leaned in closer, sliding her hand farther up Jace's thigh towards his growing erection, she replied, "Mmmmm me too....come on Jace pull over real quick...I can't wait to ride your hard cock again."

Jace's heart pounded in his chest with excitement as he desperately searched for a place to pull the truck over. He shouted out with joy as he spotted a shoulder up ahead with room for the truck. Behind the guardrail there was a steep incline so Jace figured they would be safe from any zombies sneaking up on them.

Pulling the truck over and shutting off the engine, Jace knew it was time as he wrapped his hand behind Kelly's head and pulled her lips to his for a passionate kiss. Kelly moaned into her brother's mouth as she climbed over the center console and rested on his lap. Their kiss felt so natural for both siblings, a clear expression of their new found love. Kelly broke the kiss momentarily as she raised her shirt over her head to expose yet again her lingerie encased breasts. After unsnapping her shorts and pulling them down to her thighs, Jace wrapped his hands around Kelly's hips, slowly caressing the soft skin of his sister's curvy body as they drifted up towards her chest. His hands wrapped around her back to undo her bra as Kelly reached down to pull down his pants.

As Kelly was quickly undoing his belt and sliding his pants down past his knees, Jace's cock swelled to its full size, the feeling of his sister perfect C cups was amazing.

Raising her body up over his lap, Kelly grabbed her brother's cock and aimed it at her sopping wet cunt. Her wet juices dripping onto cock head as her cunt barely hovered over his cock.

Looking into her brother's eyes Kelly cried out, "I love you Jace! As long as were together were gonna make it through this."

Lightly stroking Kelly's cheek and returning her gaze, Jace replied, "I love you too Kelly, your the only woman for me! If it wasn't for you I would have nothing to live for."

Their lips crushed together in a soulful kiss as Kelly dropped her cunt onto her brother's throbbing cock. Jace groaned into his sister's mouth as he again felt the walls of her warm, hot, and silky smooth wrap tightly around his cock. As Kelly got into a good rhythm, bouncing on top of her brother's cock, she giggled as she looked at Jace's face, his mouth open, eyes shut, and contorted with pleasure. No sister should see her brother's face like this, but she thought it was cute. Riding his cock harder and faster made them both scream with pleasure as they drove each other closer and closer to their mutual orgasm. Kelly marveled at the feel of his smooth, naked cock deep within her, but thats when it hit her.

'Shit! I forgot to put a condom on his cock! The more we do this unprotected the more likely I'll be knocked up!' She thought to herself, kind of turned on by the thought but knowing that being pregnant would leave her ****.

But the feeling of her approaching orgasm made her forget about it as she began to ride her brother's cock like a woman possessed. Her butt hitting the on button of the radio as the sound of low static filled the cab.

"Awww shit Jace! I'm gonna cum soon! Cum with me Jace!"

The feeling of his hot sister's tight cunt and the sight of her bouncing on top of him, her perfect tits bouncing with each thrust. He knew he was close to cumming too. Jace wrapped his hands around her back as she wrapped hers around his neck, bringing each other in for a hot and passionate kiss. Kelly's hard nipples lightly brushing up against his chest before they crushed against him.

They groaned into each others mouths as their orgasms hit and Kelly's pussy was flooded with a massive load of her brother's hot white cum. As her orgasm hit, she could feel each rope of her brother's cum shoot deep within her unprotected womb. She shuddered with lust, realizing the risk. As they came down from their orgasms, Kelly and Jace continued their kiss, exploring each other with their hands and tongues. Suddenly they broke their kiss as they heard a low voice over the radio.

Kelly raised herself off Jace's cock and with one hand cupped her cunt, holding her brother's cum within her pussy as the other played with the dial on the radio.

A woman's voice came over the radio, "We are a group of uninfected people living in a protected colony! Salvation is here! We have food, water, shelter, and protection..we are at Mount Rainer!"

Jace and Kelly looked at each other smiling, excited to hear about other survivors not too far away. As they dressed and Jace pulled out heading down the road, Kelly knew she had to tell her brother that she could get pregnant with all this unprotected sex. She glanced at Jace with worry, he looked back at her and smiled giving her a quick kiss on the lips. He whispered as he gently stroked her hair, "I love you Kelly....no matter what...I'll always be there for you."

"Awww I love you too Jace...." Kelly responded smiling as she felt reassured by her brother's love. As Jace stared out at the road, she placed her hand on her stomach and looked out the window smiling happily. She thought to herself, 'If I get pregnant so be it...we love each other and soon we will be somewhere safe where we can live together in peace and raise our children.'

Kelly must have dozed off because Jace elbowed her awake and said nervously, "Wake up Kelly, I think were here..."