Author's Note: Thanks for the feedback! I really appreciate it...the more feedback I get, the more I want to keep updating lol. So here's another chapter for you:-)

I couldn't stop myself from kissing Casey. It was like, we were talking, and she was just there, her lips looking so damn inviting. So she made me do it, really.

I was surprised not to feel her pull away. In fact I think she was…

Yeah, she was.

She was kissing me back.

I growled and pushed her down into the sand as I attacked her with my mouth. I let out all of my pent up frustration on her. I kissed her until my lungs screamed for oxygen, and then let her go.

She stared up at me from where she lay now, down in the sand. Her dark hair was fanned out and her swollen lips were parted as she gasped for breath. Her eyes were wide and cheeks were red. We stared at each other, both of our chests heaving as we panted.

"Derek…" she murmured. I knew she wanted to say something. Protest me. Tell me it was wrong.

I didn't care.

I swooped down and captured her lips again. This time I felt her arms go around my neck, clinging to me tightly, and I lied down on top of her. My tongue slid into her mouth and caressed her own tongue as my hands grasped her bare hips.

"We can't do this Derek…" she gasped out in-between kisses.

"Why not?" I demanded, devouring her lips.

"It's…it's wrong…we're stepsiblings…" she murmured against my lips.

I released her lips and hovered over her, our faces just millimeters apart. "We're not actually related," I told her with a smirk.

She sighed. "Derek…our parents would kill us if they ever found out—"

"Found out what?" I teased, searching her eyes.

She blushed. "That we were…you know…"

"Fooling around?" I grinned, watching her blush deepen.

"Derek, I have a boyfriend," she added, as if I didn't already know she was dating my best friend.

"How would he know?" I asked her, raising an eyebrow. "How would anyone know?" I leaned down and pressed a hot kiss against her throat.

I felt her exhale deeply. "Nobody will know?" she whispered.

"Nobody," I promised her, grinning as I began sucking on her neck.

She giggled at the feeling. "Derek!" she wiggled around under me and I didn't let her go until I finished my masterpiece.

"There ya go," I grinned as I looked at the product of my actions.

Her eyes narrowed. "Derek, you didn't…" she trailed off, touching her neck.

I smirked proudly down at the hickey I left on my stepsister's neck.

"Der-EK!" she shouted, pushing me off of her.

I stood up and grinned. I winked at her smugly and turned to go back into the house.