Strumming my pain with your fingers.

Derek's POV

I can't believe Casey had this effect on me. Or really my pants. She's dancing around our apartment in soffee's and a very revealing tank top that I doubt would even fit Smarti!

"Casey?" I asked nervously and flushed as I dropped my hockey bag beside the door.

"hmmm?" Casey asked looking at me with half closed eyes. I wonder if she realized how sexy she looked. What the hell? Derek shes your step- sister! You sick little basterd!

"what the fuck are you doing?" I asked disapprovingly watching her provocative dancing and choice of clothing.

"awhhh is poor little Derek getting a little happy around his sexy little sister?" she asked while eyeing me up and down, lingering at the little tent in my sweat pants making me even more uncomfortable. I wanted to wipe the smirk off her face.

"Casey, you should be the one in fits of jealousy, you have to look at this" I waved my arms in front of my body "everyday but can't touch." I smirked. Nice comeback D-man, she wont even know how to react.

Casey walked towards me and wrapped one arm around my neck. Was not expecting that….

"Who says I can't touch?" her lips close to my face just asking to be kissed. Her breath stunk of cheap wine and hard liquor.

"Casey, how much have you had to drink?" I couldn't tell if she was drunk or tipsy. Her cheeks were flushed and her clear blue eyes were wide and innocent, like a deer caught in head lights. She suddenly pilled back in a daze.

"how did you know? Please don't be mad but I kind have gotten into your liquor cabinet heheheee. It started with one drink to just calm my nerves and then it became two then three then I lost count oh my gosh Derek could I possibly have become addicted? Oh no! I need to go to therapy then AA meetings and what will my mom think? Im a horrible person!" her face fell and she looked like she was about to break down crying. I wrapped my arms around her.

"chill Spacey, you aren't an alcoholic. I promise. Why did you need calming in the first place?" I asked curiously yet still amused at her freak out. I look down at her still in my arms.

"Well because I was planning on doing something tonight… I needed help" Casey said suddenly then ripped out of my arms and ran to her room.

"Wait what were you going to do?" I yelled after her but it was too late the door slammed. So I just decided to go and work on my homework and bother her later. Shes been acting way weird lately

Casey's POV

I can't believe I almost finally seduced Derek. Why the fuck did I pick tonight? I'm such a pussy for not going through with it! Wow I can't believe just thought that. College has defiantly changed me. Whatever. I just no if I don't tell him tonight I never will. I heard him shuffling into his oom.

I decided I was going to change, so I looked through my closet for my sexiest outfit.

A/N: this is my first fanfiction so if it sucked, my bad. There will be more depending on if I get any reviews. I know Casey's a little OOC but that's the point, im trying to show that living with Derek changed her. PM with any ideas and if you want to know what happens review?