Disclaimer: I own nothing relating Life with Derek or Supernatural except for the storyline.

Category: Supernatural/Romance

Summary: Casey Mary Winchester has always wanted a regular life. She runs off to live with her Aunt Nora and her younger cousin, Lizzie. What happens when a stranger becomes her older, hotter 'step-brother?' He ruins any relationship she starts. How can feeling that develop be suppressed when Casey knows that have no relation. No matter how much they try, Casey ends up wanting him more and more. But, what happens when Casey's real older brothers, Dean and Sam appear for a case; that is revolving over the Venturi/McDonald household.

Couple: Derek Venturi & Casey Mary Winchester/McDonald (In case for those of you who didn't realize this was a Dasey fanfic.)

Old Life, New Life

It had been quick. I always thought that people enjoyed planning their marriages, especially women. That they would plan out their perfect wedding until it drove them insane. I wasn't one of those girls. I didn't even think about marriage. I was too young obviously, but mostly because I knew I couldn't. I couldn't marry a man with a stable job. Also, with three men by my side while hunting creatures practically every day, easy to say that anyone of the male sex that wasn't related to me in some sort of way had no chance of coming anywhere near me. While still regarding Dean's rules, Derek was the first guy I was ever with and unfortunately for me, he was also the one I gave myself up to.

Was it really unfortunate? There hadn't been pain. I specifically remember reading online that a girl's first time was uncomfortable, but he had been gentle. It was gentle, yet incredibly passionate. Even though, we didn't know each other or even love one another. My whole body had felt electrified by his touch. And, now, I couldn't even think about him. He was there. Around me. He surrounded me. We would soon be sharing the same household. The awkwardness would intensify.

During this whole period of a rapid wedding, I could not bring myself to regret having Derek. I should, but I couldn't. That was the unfortunate part. Something in me was screaming at me for repressing my feelings. Every nerve ending in my body was craving to be touched by him to feel what I had felt. I pushed his memories away. I couldn't allow myself to think about him. My mind was winning the battle. In the short amount of time I spent with the Venturi family, I noticed a whole different side of him. One, I truly adored! It made it harder for me to repress my memories.

The way he was with his baby sister, Marti, he was adorable with her. However, I only had a brief encounter with such a cute scene between brother and sister. He reminded me a lot of my older brothers. They had been always careful and caring towards me. I was always put first, just like the four year old was in Derek's eyes. He may act like a jerk, but I felt that there was something he was hiding, this part of him that I knew that girls would die to have for in a boyfriend.

I relapsed. I felt fluttering in my stomach. I couldn't like him...could I? He believed that were going to be step-siblings, which meant that technically we wouldn't be allowed to be together no matter the feelings. I was going to be strong if I was going to live with him. I could do it! I could pull off being his step-sister. I was not going to fall for him. I wanted a normal life; I was going to get it. No boy by the name Derek was going to come anywhere near me emotionally or physically.

"Casey!"

I turned around to face the bride. My aunt was beautiful. Her elegant white bridal dress was simple, yet breathtaking. It had white lace at some spots, her hair in a loose bun. I smiled at her. Aunt Nora was beaming. She closed the door behind her as she stepped inside.

"You look gorgeous Case," she smiled at me; she twirled her finger telling me to spin for her.

My midnight blue chiffon dress twirled. I had fallen in love with it. It was a one shoulder sleeveless cobalt color dress. It had flow-y fit that stopped mid-thigh. I had done light makeup, my cheeks were rosy. I wore a thin coat of eyeliner along with mascara. A light pink lip-gloss made them glossier and natural. My hair was half straight while the ends were curled all pulled over one shoulder.

When I stopped, I hugged her. "I am so grateful that you are letting me live with you," when I pulled away, I shook my head, "You are going to give George a heart attack when he sees you. You look stunning!"

She gushed. Perfection, her cheeks were becoming rosier by the second and naturally. Aunt Nora grabbed me, her arms swung around me.

"Common, we wouldn't want to ruin your make-up! It's your special day."

We both giggled, restraining ourselves from sobbing like little girls. "When the wedding march begins, you know what to do. I'll be waiting to walk you down the aisle."

My beautiful aunt nodded, stepping aside. I walked out of the room. My black pumps clicking against the marble floor as I descended down the stairs, I glanced down. Everybody was heading towards the back, where the wedding ceremony was taking place. George's family filled the seats on one side, while the few members of the Winchester and Tanner family sat on the other along with a few close friends from both of them were spread across the lawn.

My father's step-mother was a Tanner and for reasons unknown, my grandfather had changed his name legally to Tanner as well. My aunt had mentioned that during the preparations. This was going to be the first time I met my grandparents. Father was never really close to them, I had figured that much since he never mentioned them, nor did he ever call them. I found out that Aunt Nora had a twin sister, Fiona, who had a daughter around my age called Victoria. From what Lizzie had told me, a teenage Fiona gave birth to a drama queen.

When Aunt Nora asked for me to bring her down the aisle, I was confused. Her whole conversation was about how she didn't really get along with her step-father, since he had easily given up on his son after he married 'beneath' their family's expectations just like she was doing with George. I had rolled my eyes at the immaturity of the eldest Winchester, well Tanner now. She would have asked my father to do it, but since he was unable to attend the wedding for obvious reasons, she had chosen me as a substitute. Little Marti would be the purple flower girl, while Lizzie would be a bridesmaid. Nora had not asked anyone else to be in the wedding party due to quick planning.

I marched gracefully, greeting people. I noticed a man, who had an uncanny resemblance to my father. It was my grandfather with his second wife. As I made my way outside towards the elderly couple, who were whispering to one another, I was intercepted. In a swift movement, I was pulled away from the guest and pushed into a small room near the entrance to the lawn. A hand was clapped over my mouth, preventing me from screaming. My eyes were met with bright blue ones. I gulped.

"You promise you won't scream?" I nodded at the sound of his deep husky voice.

The hand released him. I was about to slap him when he caught my arm, pulling me closer to him. I tried pushing away from him, but he was a little too strong for me.

"You've grown so much Casey."

I gasped. "How do you know my name?"

The man's smile grew, he seemed amused. "Don't tell me you forgot me!"

"I don't know who you are! How could I forget you if I don't know who you are?"

He leaned in and whispered into my ear, "My sweet little Cassie, tell me, how does one forget the man, who you pledged your eternal love for?"

I gaped at him, my mouth wide open. His blond tuff of hair, his sparkling blue eyes, his cocky smirk, he reminded me of someone...my godfather.

"Cooper?"

He smirked. "There we go, babe. Finally remembering you childhood best friend?"

I launched myself at him, embracing him in a tight hug. I had completely forgotten about him. When I was living with my godfather Danny, his son used to play with me. Cooper had come to live with his father three years after I had been dropped off. He was ten when I was three. Our seven year age difference disappeared when we played. It had been so long, I remembered telling my godfather that one day I would be Mrs. Cooper Reeves!

When I was five and ready to return to my family because my brother complained about missing their sister, Cooper had been heartbroken seeing me walk out of his life when he was twelve. Danny had been my mother's old hunting buddy; my father had met him a few times from what I had heard. He knew I would be perfectly safe with a retired hunter.

Danny's wife had issues, causing them to split. She dropped their son off before having to face the demon she had made a deal with. It was a tragic story, which Danny and Cooper had come to deal with.

When my feet touched the ground, I kissed him on the cheek. I told him that I missed him. Then, it hit me, what was Cooper doing here? I didn't think Aunt Nora knew Danny, meaning his son wasn't invited.

"What are you doing here, Cooper?"

He chuckled. "I need your help. Since, my father is too busy and slightly a little too old to help me out with a hunt, I tracked you down."

"Help? What for? And, how did you track me down?"

"Beautiful, I'm a computer-God. It was a little too easy cracking Sammy's e-mail password. Noticed a few messages from you, used that to find your IP address and voilà, here I am. It's for a case."

"A case?" Cooper knew that the Winchester's were hunters, but I didn't think Danny would allow his son to become one. He did after all retire to give his son the life Danny wished he had been able to have had.

"It's not too hard, but the problem is that the victims that are being chosen are girls. This thing is extremely selective."

I sighed. I was going to ask him to tell me more when I heard Lizzie call my name. I gave him a pointed look, which he returned with the puppy dog eyes. God, his eyes were so blue!

"Fine, I'll help you, but I will not ruin my aunt's wedding. You will sit and be a respectful guest that I know you can be!"

"Don't worry, my sweet Cassie. I'll be on my best behaviour. Just save me a dance, will ya?" He winked before walking out of the room. Why did he have to be so cute and well, my best friend? I couldn't possibly say no to those beautiful ocean blue eyes.

As I stepped out, I caught Derek staring at me. There was something in his eyes that I couldn't explain. I ignored it; he had been ignoring me for the past weeks. If he could, I too could play the same game.

I made my way back to where I was supposed to stand and wait for the bride. He was near the staircase. When I stepped onto the stair that was when he grabbed hold of my wrist. He tugged me down. We were face to face. I both heard and smelt his peppermint breath.

Derek demanded, "Who was that?"

I pulled my wrist out of his grip easily and stepped up a stair. I glared down at him. "None of your god damn business Derek!"

He matched my step, his eyes cast down at me. "It is when you walk out flushed with a satisfied looking man walking out before you. This is our parents wedding. Don't screw this up by acting like a major whore, especially if you are trying to make me jealous. It isn't working. We had a thing. It was one night. One drunken night, it didn't mean anything. We are going to be step-siblings within a short few minutes, so it's useless."

"God, don't you need an attitude adjustment. You are so egotistical and obnoxious. Not everything is about you, Derek! Now, go away. We wouldn't want to ruin our parents wedding, now would we?" I quietly yelled. I turned to take another step, over my shoulder I added, "I've told you, I've already forgotten about it. I'm allowed to be with whomever I please."

I continued marching up the stairwell with pride, half hoping that Derek stood there gawking at me. I didn't know why those words flew out of my words, but I didn't care. I was pretty sure not many ever questioned what he said, not even his own father. As I made my way, and I heard that everyone was to be seated, I wondered to myself. Was he jealous? He was the one to bring it up. He was just being a jerk. It meant nothing. Or did it? God, this wasn't a good time to be contemplating whether or not he was jealous of Cooper.

I took a deep breath. The wedding march commenced and Aunt Nora gripped my upper arm as we both made our way down the stairs, a bouquet of blue roses. Everyone stood up as we walked down the aisle. I caught Cooper's eyes, he winked at me. I smiled as I walked by. I then looked at George and saw Derek's eyes were on me oddly enough. I stood beside my aunt and Lizzie as the minister started the ceremony. Everyone was seated and my eyes were flickering from Cooper to my grandparents to Derek and back again. I barely paid attention to the words and vows that were being spoke not a meter away from me.

I clapped when the words 'I do' escaped my aunt's lips. She kissed her new husband. They both walked down the aisle together as people continued clapping. Derek and I followed behind. When we passed Cooper, Derek glowered at him before pulling me closer to him. I noticed my best friend's confusion because I was feeling exactly the same way. What was Derek doing?

George and Nora began to dance to a slow dance. They were laughing together. I was happy that she was enjoying her day. They continued to dance together, until another slow song came on allowing other couples to come onto the dance floor. Lizzie made her way towards her new step-brother, Edwin, who was handing Marti another purple cupcake. That child looked like a purple clown, she had it everywhere!

The deep voice whispered, "You promised me a dance." It was Copper.

I giggled as he pulled me onto the dance floor. The song was slow, but we were both good dancers. Both, Danny and he showed me loads of moves in both figure skating and dance. I guess some would think they may be gay, but common, figure skating allowed both of us attain agility and speed. Cooper had used those skills in his sports. Dancing, well that had just come naturally to the both of us; even we started at a young age. I was a quick learner, my father realized that when I finished training quicker than my brothers. My brothers' would joke around about me being weird.

His hand was on my waist while the other held onto mine, while my other hand was gently placed on his shoulder. At first, we were just swaying, but as we continued to listen to the music, we moved back and forth with the beat of the melody. He twirled me twice before we started twirling and switching spots. I bent down with his steadiness before he pulled me up, our faces inches away. I spun towards him before he caught me, his hand on my thigh while my leg was hitched around his waist. We stayed in that position as that leg rose perfectly straight. I then went down, almost doing the splits before he twirled me; both of our hands were locked with each other.

We continued to dance professionally and soon after, a crowd formed around us. The song was coming to its end, Cooper whispered to me to jump before spinning me in a diagonal line. I posed before rushing over to him and jumping. He picked me up, my legs and arms in the air, I felt like a dove.

Loud clapping filled the room before I was put back down. We bowed and curtsied. The slow songs had come to an end and it was time for some hip hop, music anyone and everyone could dance too. The dance floor started to fill, but Cooper and I still had some space surrounding us. He smirked. I slyly smiled back.

I drowned into the music as I started moving my body to the music. I was popping my body, leaning in and back. Cooper spun on his feet. I danced and he watched as he nodded the beat of the song. I spun on a foot before placing both my hands on his chest and swaying my butt. Then, I turned at spun and continued to move my legs, Cooper came closer, his hand and body moving along with mine. He pushed himself backwards before doing a perfect pirouette that lasted for several seconds. We were both smiling. We danced around each other, our bodies were closer, and his hand traced my leg up to my abdomen. I jumped and spun in the air like I did when I skated. My arms moving in the air as if I was knocking hard onto an imaginary door just before I leaned backwards as he held onto my thigh. I snapped my head towards the people around us. I noticed Derek's face, it was blank.

I moved away from Cooper, who was enjoying himself. I was too, but that blank face. It made me feel things that I couldn't describe. The fluttering was back and I wasn't sure whether it was towards my childhood crush or Derek.

"That all you got," Cooper mocked, screaming over the loud music.

I smirked before doing a back flip and then twirling like a ballerina on my toes. I rolled my head, my hair flying along. The crowd dispersed after awhile. Too many people had joint in, my body was pressing against Cooper's as we both moved together. Our hands were on each other's cheeks, lips centimeters away. A small movement and our lips would have been touching. I spun before hitting someone's hard chest. I hands were being held there. I looked up. I saw those coffee brown eyes.

Derek let go of my hands, but placed his on my waist. I swayed my waist; he removed his hand before producing a freestyle movement even I couldn't describe. His feet were impeccable, he was on his toes, and he moved one leg while the other remained flat on the ground. Then, he did something he did something that was like as if he pushed down his foot while one was on its toes. He came behind me, his hands on my waist as he pulled me against his lower body. We continued to sway. I ignored what I said before the ceremony just like I think he ignored his.

He whispered, "Didn't think I could dance did you?"

I felt something on my lower back. My eyes widened. I gasped before pulling away and rushing through the crowd. I didn't know if he followed me, but I stood outside overlooking the large fountain. I stared up at the sky.

"God, Cassie, you sure know how to move," Cooper announced his arrival behind me. He wrapped his arms around my waist, placing his head on my shoulder. We stood like that for a while before I turned.

I questioned, "What's the case about?"

He smiled. "It's at this ice ring in Ottawa. Weird scenario, a female skater accidentally killed her partner during their rehearsals, years ago."

"What?"

He shrugged. "I know weird case, but someone's gotta do it."

"Why bring me into this?"

His hand rubbed his neck as he awkwardly mentioned, "You sorta look like her. The guy is a ghost. He only harms girls that are skaters, brunettes and petite."

I rolled my eyes. "When do we leave?"

"Leave where?" Another person asked. I turned and saw Derek approaching us.

I internally groaned. I averted my attention back to Cooper, who was staring down at me. Surprisingly, he leaned down and brushed his lips against mine. When he pulled away, I glanced at him questioningly. Derek, on the other hand, was furious.

"Get your hands off my step-sister," he growled.

I snapped. God, boys were so immature. "Keep it inside your pants boys. No need for a pissing competition. Derek, why must you interfere in everything? Our parents just got married today and you already acting like an overprotective foul! You know very well that I can take care of myself! And, you," I turned towards my best friend, "What the hell was that?"

He pursed his lips. "I need to talk to you alone."

I sighed, "Derek," I didn't even look at him, "could you please leave?"

"No way," he retorted.

I spun around. "You said it meant nothing and now you are acting like a jealous boyfriend. Make up your mind! Actually, don't. I've made mine. Us," I pointed between the two of us, "would never work. It's in the past, I've forgotten about it, why can't you just act like it!"

He huffed before turning around and walking away from me. I felt a pang of sadness as I saw him walking away from me. I wanted to call after him, but it would be odd. He thought we were related through marriage. I couldn't ruin it for a maybe relationship. As he stalked off, he yelled, "I hope you get screwed so hard, Casey, that you will regret your existence!"

I sighed and turned around. Cooper seemed to have been watching me. I looked up at his blue eyes.

"What was all that?"

"I don't know," I muttered, "Why did you kiss me?"

He took a large breath before saying, "I don't know."

I had to go. I didn't want to be around Cooper at the moment. My feelings were going crazy. "I'll do the case. We'll meet up at Smelly Nelly's tomorrow for lunch. We'll talk then."

I fled. This was all too much to handle.

Cooper kissed me.

Derek was pissed.

And, me, I was confused as hell. Could my life get any crazier?

I groaned. There they were...my grandparents. Questions popped into my head. Would they know who I was? Would they even care? Did they even care about my father? Did they worry for him? There was only one way to ask.

Just as I was about to take a step forward, my phone rang. It was my father. I hoped that nothing was wrong.

"Dad?"

His voice was hoarse. "Hey, Case. How are you, darling?"

"I'm fine," my voice broke. My eyes remained on the elderly couple who were silently dancing. "Are you okay, Dad?"

"I'm alright. I miss you."

"I miss you too, Daddy." Tears were freely falling. It had been so long since I spoke to him. "Did...did you need something?"

He sighed. "Cutting the small talk short, are we? Yeah, just needed to know you were safe. Also, where are you?"

"Dad," I spoke softly, wiping my tears away. "You promised me, you wouldn't come for me."

"Are you with Nora?" He completely ignored me. He was pushing me to lie to him. I hated it!

I responded lamely, "No. I briefly met Nora before heading north. Got myself an apartment and enrolled in school. I start in two months."

There was silence. I chose to break it.

"Dad, you never told us about grand-dad or anyone."

"Why the sudden interested, hun? I don't have much time. Dean and Sam are meeting me after they speak with a couple witnesses."

I quietly replied, "No reason. It's just that Danny told me a lot about Mom's parents. The Campbell family were quite popular in the day. I just...I want to know about your parents."

He let out a shaky breath, "They hated me. They were rich, but I married your mother, who wasn't rich or as prestigious. My father wanted some with a name in society. After that, I didn't bother with them. She made me happy your mother. I had returned from the marines and god, she made me forget everything."

I apologized. Then, I told him I loved him before he hung up. My eyes had never left my grandparents. They weren't worth it. If they didn't love my father, I couldn't love them. I walked away from them, entering the hall. People had left. It was clear. The dance floor was almost empty, except for Lizzie, Edwin and Marti playing around to the music. A few couples also danced. I noticed George and Nora feeding one another. I smiled. They were untainted by the cruel world. Their love was hovering around them, encircling them. Their love was pure and absolutely beyond flawless.

There was Derek. Across the room, he was watching me. I could sense something was troubling him, perhaps it was me. His brown eyes were cold.

Then, there was Cooper. He was walking towards me. His crystal blue eyes bright as the light moved over his face. They seemed perfect. He seemed perfect, his smirk intact. But, even though, on the outside everything seemed perfect. There were flaws. You could see them if you looked close enough, through the cracks. And, when you would, it may be a surprise, but one may find something monstrous and grotesque.

A/N

So... how was that? Questions and reviews are very much appreciated! I'm having a blast writing this and answering your questions on the side...some of you have great points to make! Please REVIEW even if it's a "Can't wait for more" "I love it" "I hate it" or whatever! Just please give me some input, it'll help me grow as a writer!

I have my outline for the next chapter. I haven't written it, but I have a pretty good idea of what is going to be in it and everything! Chapter 5 is already being planned, so yes.

I'm applying for some part time jobs...a new one. My old one is just too far for me and it messes up with my free time. Some stores are just plain out ageists. They won't let me work because I'm not 18! I find that ridiculous because I already have like two years of experience at a perfume boutique!

Sorry for that small rant!

Review! Please and thank you!