Disclaimer:I don't even own three pairs of shoes. How in the world would i be able to own LWD??

By the end of the third movie Derek was leaning on the armrest and sitting in his chair. Casey was sprawled out on the couch with her head resting on her forearms. She was now in love with the movie I Am Legend and already planned on showing the movie to Emily. She lost interests in Derek's first choice of movie and she watched Love actually so many times she didn't need to watch it. Instead she spent the first four hours of movie night thinking of Derek and planning on how to ask him subtly about the supposed rule he set amongst the boys in school. She tried to ask Sam but that didn't go down to well.

FLASHBACK

Casey was patiently waiting for Emily at their locker during their free period unfortunately for her Emily was on the phone with Sheldon and lost track of time. So there Casey stood alone in the halls that is until she overheard Sam talking to Derek about the new girl in school and how hot she was Classic male aura. She noted that after Sam spoke of the girl's physique Derek didn't immediately pounce. Instead for a moment he seemed to look at Sam disapprovingly. This made Casey's heart flutter uncontrollably until the look faded and a smirk immerged as Derek excused himself from his best friend and made his way over to the foreign female. Casey couldn't turn her mind off she was desperate and felt she couldn't wait till the middle of movie night to find out the truth. She made to move towards Sam direction to briefly question him but was stopped by the foreign girl strutting right past her. She didn't understand why anyway walked like that in public, it made her look like a slut. Seeing her walk like this meant only one thing she was teasing Derek Venturi and that made Casey's blood boil. She turned her attention to Derek. He looked sincere and unfazed by the girl's attempt of catching his attention. Casey's glare had faltered and instead she just decided it be fun to argue. Besides it meant talking with Derek and she was always up for having Derek's undivided attention.

"Nice Derek. She's been in our school for two hours and your already toying with her, making her one of your bimbos. Typical jerk" Casey knew her words were bitter but when they bickered they always were.

"Ah, Spacey nice to see you again." Casey wanted to smile but she couldn't not so early into their fight. If she smiled he would know something was up. She decided to pointlessly argue. It was a lost cause but she was willing to fight if it meant Derek looked at her like she was the only person in the world.

"You saw me last period. We live together, you see me everyday."

"Yep and don't you forget it Spacey." Aw the infamous nickname she had come to find endearing. He said it with so sedately and with such ardor that she began hearing her heart pound in her ears. She needed a comeback, but she couldn't think of one so she asked a blunt question.

"What does that even mean?"

"Wouldn't you like to know?" She then realized there was slim to no sense in their conversation and could no longer hold back the smile. The smile turned into laughter and soon she was laughing along with Derek, clutching her sides because it hurt so much. She spotted Emily turning the corner and she made up some lame excuse to Derek while still laughing. She watch him make his back to Sam still laughing for no reason as Emily approached her.

"Hey Em." Emily was just smirking at her and giving her a knowing look. "Oh shut up." She playfully nudged her and they made there way to the lunchroom.

END OF FLASHBACK

Derek too had no interest in the movies. He actually spent the first three hours just glancing at Casey to catch her humming or singing or laughing along with the movie. Seeing her content made him happy as well. He noted that she glanced at him a few times and after the fifth time he decided to watch the movie or pretend to while he concentrated on a way to approach her with his feelings.

Now that the third movie was over and it was on to the last one neither of them could bite back the speech they had constructed over the passing hours.

"Derek"

"Casey"

"You go first," they both stated after calling the other's name for their attention only to be startled that were doing the same thing.

"Derek….do you think of me as a sister?" That was not how Casey wanted to bring up the situation but she just blurted it out.

Derek blushed and ran a hand through his hair nervously, "Uh Case that's what I need to talk to you about. I sort of don't and never have, probably never will."

"Oh." He nodded in agreement. "So Derek the rule you have about no one dating me, what is that about? Do you want to make me miserable or something because then it's working." That's definitely not how she wanted the situation to be expressed. She wanted to tell him she found it incredibly sweet but for some reason she couldn't stop the angered words, no matter how bubbly she felt inside upon hearing that she wasn't considered his sister.

"Casey, I'm sorry if it made you miserable but that's not why I did it. How did you find out? I'm sorry."

"You're sorry? Please Derek. I found out from a friend and then if it wasn't meant to be harmful then why did you ban all the guys from dating me! I've never been so self conscious Derek! What's your damage, why do you alwa.."

Casey had been rambling and she stood up and started pacing. Derek had never seen her like this and it was driving him crazy till he couldn't handle it anymore. He stood up as well and turned her to face him while simultaneously crashing his lips on hers. She was shocked at first but when that wore off she eased into the kiss as well. It soon became a battle of control which Derek won after making Casey moan after several unspoken protests. He had put so much enthusiasm into the kiss that she was soon lifted off of the ground and into his arms. He led her back towards the couch and gently laid her down with himself on top of her not removing his lips for a second. He grazed her bottom lip begging for entrance and she allowed. They explored each others mouth and grazed each other's tongue playfully. They broke apart moments later both desperate for air and Derek decided he finally knew why he set that rule. It wasn't because the guy's weren't good enough, though they weren't and she did deserve better. He was insanely jealous of the guys who got to flirt with her and touch her and kiss her.

"Space Case." She loved the sound of it, especially coming from those lips. She looked u at him and stared into his eyes, not once glancing away.

'Derek you just kissed me. Why?" She didn't say it nor did she say it out of idiocy She had a pretty good idea of why but she wanted to hear him say it.

"Well to shut you up of course." She hit his forearm playfully. " Casey I can't stop thinking about you and I didn't want anyone else to be with you so I set that rule. You just deserve to be happy and if I knew it was making you miserable I would've called it off. I really am sorry. Both for setting the rule and for kissing you while you were rambling, I mean uh speaking." She smirked. " I'm not sorry for kissing you though, if I could only to one thing in the world for the rest of my life it be kissing you." He gave her a smile. The smile Emily had never seen. The one which didn't show gratitude or mark victory. The one that wasn't used to attract babes. The one genuine smile he never knew he could produce and which he only produced for Casey.

She placed her hands on his chest and gently pushed him off while she sat up. "So you really like me?"

His smile never faltered. "No." Her smile did. " I love you." But the smile reformed on her face as she crashed her lips on his but quickly pulled back. She noticed the confusion etched on his face. " I love you too." He leaned in for another kiss but she put her hand up to his mouth. "Movie Night isn't over yet and Shrek happens to be my favorite movie." He sighed and muttered and "okay" but before he got up to change the disc he gave her a chaste kiss and said "I love Movie Night. It's my favorite day of the week."

"Mine too" She shoved him towards the television. He popped in the DVD and made his way back to his chair. He reached over and grabbed her hand with his. She looked u at him but he was humming along to All star by Smash Mouth . She sighed in relief rather than indiscretion and began humming the chorus with Derek.

How is it??