A/N: Over 16000 hits! It's official - I love you guys! Thanks for the support!

Okay, this chapter started out quickly for me, then slowed up because off one scene that I wanted to make sure was just right. The end result - the longest chapter of the story so far (over 4000 words). There is a little more Truman-bashing in this one. Also, this story is based around "March Break" (since many people considered that the top Dasey episode of season 4) and includes some of the original dialogue. Also, if you notice anything format-wise that doesn't seem right in the first few chapters, let me know b/c I went back to fix some grammatical errors and name errors (since they decided in season 4 to make it 'McDonald' instead of 'MacDonald').

Disclaimer: ...I'm not even going to say it...

Now, on with the show!

Another A/N: If you haven't figured out from the chapter title what's going to happen in this chapter, I'm going to beat you over the head with a hammer! J/K! Enjoy.

Paul sat in his office, quietly sipping on a cup of coffee. It was a quiet Friday morning, a week before March Break was to begin. 'Ah. So peaceful' he thought to himself.

His days had grown more peaceful ever since Casey began dating Derek. Her visits didn't occur as frequently, but he still had the joy of a visit regarding an upcoming academic event or about a silly fight with Derek. Just as that thought ran through his head, Casey came storming into his office.

"Casey, what a pleasant…"

"I can't believe him! I'm going to kill him!" Casey yelled out.

"Look Casey, calm down and just explain to me what Derek did…" Paul started.

"It's not him I'm mad at as much as I am Truman! That sorry lowlife hit on me, trying to ask me out on a date! Even after he was warned not too! Ugh!" Casey added a dramatic effect, shaking her body to exaggerate how disgusted she was.

Paul was stunned. "So…if it's this Truman guy you're mad at, then where does Derek factor into this?"

"I'll show you" Casey said, motioning for Paul to stand up and walk out into the hallway. Principal Lassiter, along with a few students, had gathered around as the janitor was prying a locker open. As the locker door popped open, Truman tumbled out onto the floor. His clothes and hair were disheveled and he appeared to be sporting a black eye. It was just at that moment that Derek walked by.

"Wow, that's a neat trick!" Derek exclaimed. "Can you teach me that?!"

Truman immediately sprang to his feet and backed up toward Principal Lassiter. "You're a freaking psycho, Venturi!"

Principal Lassiter immediately turned to Derek. "Did you have something to do with this, Mr. Venturi?"

"Sir, I have no idea what he's talking about" he replied back in a cool tone.

"That's a lie! He roughed me up, then had some goons shove me in there!" Truman yelled back.

"Mr. French, why don't we go to my office and get this issue resolved" Principal Lassiter said as he took Truman by the arm and led him down the hall, with the crowd dispersing soon afterward. As soon as the principal was out of sight, Derek began laughing.

Casey walked over and slapped him on the arm. "Der-ek! How could you?!"

"What?! It was funny!" Derek said between laughing fits. "Hey, at least now he got the message about leaving you alone!"

Casey was about to slap him on the arm again before the sound of another person laughing caught her attention. "Paul?!"

"I'm sorry Casey. After all our conversations, I never really pictured Derek as the jealous type" Paul said before resuming his laughing.

(One week later)

"Everyone's going somewhere great this March Break…expect me" Emily moaned as she and Casey stood up against a wall, watching the other students walk down the hallway.

"And me" Casey said.

"Well, at least you'll have Derek to keep you company" Emily said. She had been lonesome ever since Sheldon's family moved to Newfoundland.

"C'mon Em, we still have each other. Hey, why don't we start our own little book club?" Casey said excitedly.

"Reading during spring break? Well, at least being with Derek hasn't changed you too much" Emily said.

**in an empty classroom down the hall**

"Dude, I can't wait for the party to end all parties!" Sam exclaimed as he gathered his belongings.

"I know! It's going to be sweet!" Derek let out.

"Hey, that sounds a lot better than my party. Should we go?" Ralph said. Sam and Derek just face-faulted.

"Uh, dude, the party is your party" Derek said.

"I'm throwing the party to end all parties?" Ralph asked.

"Yeah" Sam and Derek said.

"I'm the man" Ralph let out.

"Well, too bad 'Lover Boy' won't be able to get a kitchen pass" Sam said, nudging Derek in the side.

"Please, I'll think I will be able to convince Casey to attend the party to end all parties" Derek said.

"You better have something good lined up for Casey to let you come to this one" Ralph said. He and Sam noticed the smile that was crossing Derek's face – the one he usually got when he was planning something big. "Dude, you do have something planned! C'mon, what is it?!"

"Ralphie, my boy, that is classified information. Now, I need to get Princess Casey home while you two need to get everything together for the party." With that, all three got up and exited the room.

(The next morning)

Casey waltzed down the stairs in her pajamas and a bathrobe, while Derek was sitting in his recliner eating a gigantic bowl of cereal with a wooden spoon. George had planned a surprise family trip to Quebec City for March Break. Derek chose not to go so that he could attend Ralph's party and prepare his little surprise for Casey. Casey stayed on the premise that Derek (despite the changes he made in recent months) couldn't be trusted in the house by himself.

"I'm still really not happy about this" Nora said as she walked up to Derek and Casey.

"Relax Nora. I'm sure you'll have fun on your trip somehow" Derek muttered out through a mouthful of cereal.

"I am talking about you and Casey staying home alone!" Nora replied, hands on her hips.

"It's okay Mom. I'm going to be spending time over at Emily's" Casey reassured her.

"Yeah, and I'll just chill at Ralph's" Derek stated.

"Besides, we know the rules that you and George have for us concerning our dating" Casey added.

"Nora, let's go!" George called out from the back door.

Nora pushes back on Derek's chair, making it to where he can face her. "Now I'm only going to tell you once…"

"Yeah, we know. No parties and meatloaf's in the fridge and, oh, water the fergus" Derek said.

"The ficus" Nora corrected.

"What about the fergus?"

"What's a fergus?"

"What's a ficus?" Nora let out an exasperated sigh at Derek's question and released the back of his chair, causing him to straighten back up.

"One more thing…" she starts before being cut off.

"Mom. Don't worry" Casey said, trying to reassure her.

Nora just put her hand to her forehead. "It's too late. Now, since you two are still the same, despite the dating…if you guys fight, break any rules, or if there's any damage to this house, you're going to lose your clothing allowance…" Casey's eyes widen at this. "And you are going to lose your gas allowance…" Derek leaned his chair back to stare at her. "Forever. Good luck."

"You too" Casey replied, giving her Mom a hug.

"And I'm going to miss you too" Nora said, placing her hand on Derek's shoulder.

"I'll miss you lots" Derek said before returning to his bowl of cereal.

Nora looks at Casey. "Have fun." She then looked at Derek. "Don't let him have too much fun." With that, she headed for the back door, leaving Casey and Derek alone in the living room.

(A couple of hours later)

'Damn, this sucks' Derek thought as he sat on his bed. Ralph had called him and told him about a family trip to Mexico. 'Seriously, how do you forget about a trip to the Yucatan?! Could be worse. He could be like Sam, stuck on a hiking trip with his dad, or in a car bound for Quebec City with my dad behind the wheel.' He looked over at the wall dividing his room from Casey's. Emily's family had gotten a cheap vacation package to Aruba out of the blue, causing her to ditch the plans for the all-girls weekend. He could imagine her sitting there, just reading her book all alone…

"Wait a minute. What the hell am I doing sitting here?" he asked himself. "I've got a huge plan lined up to surprise Casey. There's no time like the present." Grabbing his keys and cell phone, he quietly made his way downstairs and out of the house.

(6:35 P.M.)

Derek finished putting the last touches on the dining room table with one hand, while the other hand was holding his cell phone to his ear. "No, no, she should like everything. Thanks Sally. I owe you and Max big time for helping me out with this. Okay, bye." Hanging up the phone, he gave everything one last glance. Now it was time to set the final part in motion. He heard Casey leave her room and walk into the bathroom. He quickly made his way to her room and swiped the book that she was reading. He then went and flopped himself down on his bed to wait for her return. After a couple of minutes, Casey came into the room.

"Derek, have you seen my book?" she asked, looking around the room.

"What's a book?" he asked, flipping through the pages of a Sports Illustrated.

"You know, those things you never read" she sassed back. "I can't find 'Sisters of the White Cave' and I have to find out what happens at the end."

"I don't know" Derek said.

"Don't play stupid with me Derek. We're the only two people in the house. Now, tell me where my book is or I'll stuff your hockey card collection into the toilet."

"Okay, you got me. I was going to throw it in the trash, but I set it down on the dining room table while I was working on something else."

"Der-ek!" Casey whined as she stomped out of the room and down the steps. As she reached the bottom of the steps, she was stopped dead in her tracks by what she saw. There was a vase of roses flanked by several lit candles. There were two places at the table set, complete with dinner, dessert, and drink. Soft music was playing in the background – she recognized it as one of her CDs. "Oh my God, this is so…!"

"Amazing" Derek finished her sentence as he stepped behind her. "I know."

"I can't believe that you did this!" Casey exclaimed, grabbing him into a bone-crushing hug.

"Then I guess you'll enjoy the movies. I picked out a couple of your favorites" he added, pointing at a plastic bag nearby.

Casey kissed him passionately. "This is incredible! Thank you so much!"

"Well, shall we continue on with the evening, my dear" Derek said, holding out his hand. Casey placed her hand in his and allowed him to guide her to the table.

(10:37 P.M.)

"That was so beautiful" Casey cried as she wiped away tears from her eyes. Surprisingly, Derek had rented two of her romantic-comedies for them to watch.

"Please, no more tears" Derek begged. Why did he get those movies? At least he rented about ten action and horror movies to serve as a remedy for next week.

Casey let out a yawn and stretched her arms out. "Well, I guess it's time for bed."

"Awww, so soon" Derek said, pretending to pout.

"Well you can tuck me in" Casey teased. Derek got up and, after helping Casey to her feet, led her upstairs. As they reached their rooms, Derek gave Casey a kiss.

"Good night." He tried to walk to his room, but Casey maintained her grip on his arm. "Uh, Case…"

"I said it's time for bed" she said seductively. Derek then noticed the mischievous look on her face.

"Who are you and what have you done with Casey?" he asked. Casey immediately twisted his nipple. "Ow! Okay, you're still you."

"I want you to stay with me tonight" Casey said, before giving him a kiss.

Derek immediately took Casey up into his arms, while she wrapped her legs around his body. Derek carried her into her room, setting her down on the bed and planting kisses on her lips, cheek, and neck. "You sure about this?"

Casey just nodded her head. Derek leaned in to kiss her again. As their tongues battled for dominance, his slid his hands up underneath her shirt. His fingertips slid up her sides, causing her to break out into giggles. As his arms pushed her shirt up further, his hands began the process of pulling her shirt out of the way. Casey held her arms up above her head, allowing Derek to pull the shirt off without any problems. As soon as he tossed it off to the side, she began to pull at the bottom of his shirt. It got stuck at his arms, causing Casey to let out a growl. Derek took one hand and reached behind his head, yanking the t-shirt over his head. Her hands glided along his arms as she finished removing his shirt.

With the shirts now out of the way, Derek trailed kisses from Casey's neck down to her collarbone and even further to the swells of her breasts just above her bra. Easing his hands back underneath her body, he undid the clasp of bra. He eased it off of her and tossed it to the side. As he looked back at her, he froze at the sight of Casey lying beneath him topless. In his dreams, he had always imagined how perfect her breasts would be – his dreams didn't do the current situation justice.

"Derek?" Casey asked from beneath him.

He leaned back into her and gave her a light kiss on the lips before whispering into her ear. "You're so beautiful." The feel of his breath on her ear sent shivers down Casey's spine. He again trailed kisses down her neck and chest until he reached her breasts again. He took her right nipple into his mouth, while his right hand massaged her left breast.

Casey bit down on her finger, trying to suppress the moan building up inside her. "Oh, Derek."

Derek loved the way his name sounded as she moaned it out (of course, he liked it just about every other way she said it too, including the emphasized two syllable yell). He switched off to her left breast, taking that nipple into his mouth as his right hand slid down her toned stomach and eased its way beneath the waistband of her pants. Casey let out louder moans as his fingers rubbed up and down against her panties, arching her body off of the bed in response to the sensations flooding her body. Derek could feel the wetness forming between her legs. He was about to continue further, but Casey began to push against him.

"Case, what the…" he started before he suddenly found himself lying on his back, with Casey positioned on top of him and kissing him with increasing ferocity while her hands fumbled with his jeans. He didn't know what he had just awakened in her, but he wasn't going to complain. Finally, she succeeded in unfastening his belt and pants. Casey mimicked what Derek had done earlier, trailing kisses down his neck and chest. However, she didn't stop there. She continued further, placing kisses down his stomach until she reached his waist. Derek raised his hips up, allowing Casey to pull his pants and boxers off and tossing them out of the way. A loud gasp escaped her lips.

"What's wrong?" Derek asked, a hint of worry in his voice.

"It…it's nothing" Casey stuttered. "It's just a little…bigger…than I had anticipated."

"Casey, it's okay. You don't…"

"Don't you dare finish that sentence. I want to do this." Hesitantly, she took his member into her hand, stroking it gently. Derek let out a low moan. Casey leaned down, lapping at the tip a couple of times, causing another low moan. She then eased the tip into her mouth, circling her tongue around a few times before slowly sliding her lips up and down on him.

Derek lost all awareness of his surroundings and everything else he knew – all that existed was him and Casey. He could tell by her actions that she didn't have the experience or confidence that some of the other girls he dated had in this department, but the warmth of her mouth and the velvet feel of her tongue on him was more than enough to make up for it. As time passed, she was able to take more of him and her movements increased in speed and intensity. Finally, he was unable to hold back any longer. "Case…it's coming" he moaned just seconds before he came. He felt her pause as she swallowed, then resumed for a few more seconds to make sure he was finished. Derek held his head up and watched as Casey her lips away from him, wiped off an excess drop off her lips with her finger, and licked it off.

"So…incredible. Where has this side of her been?" Derek asked.

"It's your fault. You corrupted me" Casey said in a fake accusing tone.

"Just for that accusation…" Derek growled, grabbing Casey around the waist and rolling her to her back. He placed kisses along her chest and stomach while his hands quickly undid the button and zipper of her pants. Hooking his fingers beneath the waistbands of her pants and panties, he pulled them off of her legs and tossed them to the foot of the bed. Derek paused for a minute, mesmerized by the sight before him. None of his dreams did this moment justice. There she was, the girl of his dreams – her brown locks spread out over her pillows, her ample breasts slowly rising and falling with each breath, the hair above her vagina neatly trimmed. The light from her bedside lamp provided a soft, radiant glow on her features. "God, Casey, you are perfect."

Casey shifted as he Derek placed kisses on the inside of her thighs before reaching his desired target. His tongue glided gently along her entrance, causing her to squirm. She let out a loud moan as his tongue slipped into her. Her back arched up off the bed and her hips rolled slowly as Derek's tongue swirled around inside her, and louder moans escaped her lips as he focused on her clit. With his right hand, he took his middle finger and slid it inside of her, while his left hand eased slowly up her body before settling on her right breast. "Yes…oh Derek, don't stop" she hissed as the lust-filled assault on her body continued. After a couple of minutes, Casey's legs began to shake uncontrollably. "Oh, Der-ek!" she yelled as the orgasm swept through her body. She collapsed back on the bed, trying to catch her breath as Derek continued to lap at the wetness that had escaped from inside of her.

As she lay there, she felt him crawling up her body, planting kisses along the way. She felt his body shift to the side, causing her to lift her head up. Derek was reaching for his pants.

"What are you doing?" Casey asked.

"Uh, getting a condom" Derek replied, as if it should've been obvious. "I'm not that careless."

"Forget it" she hissed, grabbing him by the wrist.

"But…"

"I've been on the pill for a while. Plus, I've kept up with my days. We'll be safe for tonight" she said, trying to reassure him.

Derek just dropped the pants back beside the bed and leaned back in to kiss her. As they kissed, he readjusted their positions, placing himself at her entrance. He slowly slid into her, while she wrapped her arms around his midsection. As he continued, he heard a sharp breath escape from her as he encountered resistance. He immediately looked up and stared into her eyes.

"Derek…" she whispered. He could read in her eyes what she was about to say.

"It's going to hurt at first, okay?" Casey just nodded her head in response.

With one deep thrust, Derek pushed himself inside her. Casey's body tensed up as she let out a loud yelp at the pain inside of her. Her nails dug deeply into his back, causing him to grimace in pain. A couple of tears escaped her eyes, which he leaned down and kissed away. After a minute or so, he felt her body relaxing.

"You okay?" he asked.

"I think so" she replied.

Derek started off slow, allowing for Casey to get adjusted to him and also to relish this moment as much as possible. He allowed one hand to ease over to her hand, allowing their fingers to intertwine. His other hand caressed her cheek before running his fingers through her hair. Her free arm wrapped around him tightly as low moans escaped from her lips. Casey bit her lip as the pain was slowly replaced by a pleasurable feeling.

"God, Derek. Feels…so…good" Casey moaned. Derek felt her long, lean legs wrap around his waist. He took this as a sign that it was safe to go faster.

Several minutes later, the entire house was filled screams, moans, and the sound of Casey's headboard slamming repeatedly against the wall. Derek was now moving with quicker and harder thrusts. His hands now held her hands in place above her head. He was kissing and sucking on one of her nipples again, causing her to arch up against him. Her thrusts now matched his in frequency and intensity. Derek had looked up at one point and swore that he saw her eyes roll into the back of her head. Both teens felt themselves going over the edge.

"DER-EK!" Casey let out in a loud, drawn out moan as her body trembled.

"Casey!" Derek moaned loudly as he let himself go.

After he pulled out of her, Derek collapsed on the bed next to her. For a couple of minutes, both of them just laid there, trying to catch their breath. Casey snuggled up against him, laying her head on his shoulder. "That…was…"

"Incredible" he finished. Shifting to his side, he leaned in and captured her lips in a kiss. "You're so amazing."

"Don't say that" Casey replied.

"It's the truth" Derek let out. "No other girl compares to you, Case. Even when I dreamt about you, it wasn't as good."

Casey took a hand and ran it through his eternally messy hair. "Dreamt? You mean…"

"I know, I know. I'm a lowlife, perverted…"

"Wonderful man" Casey cut in. "You're better than anything my dreams could create."

"Wait, you had dreams too – about us?" Derek asked. "For how long?"

"Several months now" Casey replied bluntly. "You?"

"Probably about as long as you, if not longer" Derek confessed. Suddenly, both teens started laughing. "So, our family and friends predicted it…"

"Even our dreams had it out for us" Casey said. "I honestly think we were the last two to figure it out."

"I don't care" Derek said, pulling Casey's body closer to him. "At least I was able to figure out the best thing to happen to me."

Casey let out a light laugh at his before it was suppressed by a loud yawn. "Mmmm…goodnight" Casey moaned, snuggling up closer to him.

"Goodnight. Love you" Derek whispered into her ear.

"Love you too." With that, both teens drifted off to sleep with smiles on their faces – exhausted and sweaty, but happy. Casey dreamt about being with Derek for the rest of her life. Derek dreamt about having Casey with him the rest of his days as well – and what position he could convince Casey to try when they woke up in the morning.

A/N: Hope you enjoyed the chapter, especially the latter part. Next chapter will be the last, and will serve as an epilogue for the story.

Don't forget to leave a review.
- the OD