Author's Note: You guys, I was freaking out for like three days straight over this chapter. I couldn't sign in to my account. The sign in page wouldn't load. I tried it on like four different computers. I honestly thought I was going to have to miss this week and then all the sudden it was working again yesterday. So happy! Fabulous news...I've come up with the concept for my next long story! And there's a one-shot and a three-shot on the table. Can't wait to get them done! On a lesser note, I feel like shit. But the update is done, so I don't care XD! And we ended up with some unplanned smut. I thought I'd keep this one smut-free and then it happened. There's no way it couldn't have happened given the situation lol.

Reviewers: Hatsuharu Miku, Brittneyi, and Kakashinightroad, thank you for your input! Luckless-is-me, I wish it hadn't kept you up so late, but I'm glad you enjoyed the fluff :). Spencer has many things he'll be making up to Derek and the lost personal time is definitely one of them. Veneanar, here's to starting the week off with a good dash of M/R smuttiness! Rayne McKenna, have you considered a beta-blocker :)? Just remember, it's all gonna work out. I don't think I could take breaking my poor ficReid's heart. Srienia, sweetness! I was worried when I first started it, but it felt really good by the time it ended. This one ended in a weird place, but I think I kept most of the movement in it. You're right, though, that's definitely not a PDA kind of kiss lol. Antigone21, you're right about Ms. Morgan's wink. Unfortunately, they didn't get a chance to use the freedom in this chapter, but it won't be long before they've broken in every room in the house (except Ms. Morgan's of course). As for the oral, that has a bit of an explanation in this chapter, so we'll see if you catch it. I think I'm gonna break your heart on the Christmas break hopes... Smilewhenufeel, if I ever have the chance, I promise you I will update early. Just to make your day sometime ;). Yugiyamisex4eva, I wish I knew how to reassure you. I guess you'll believe me by the end lol. MarineLvr84, I've got a three-shot coming your way. Just hang in there :). WinterCicada, I feel like you, in particular, are really going to appreciate this chapter. I hope I'm right. Darkshadowarchfiend, awww! You're so welcome XD! Pipinheart, I shudder to think what our poor Morgan would do if he didn't have someone to turn to lol. I.C.2014, glad you think so! They make me smile. EpicLover, I'm thinking thirty chapters max, but we'll see how it goes. Don't worry too much about the agony, I'm a sucker for a not-to-squishy happy ending myself. Thank goodness the age factor and S/M bits don't keep you from enjoying it! IanJa, so I looked at my traffic stats, and I have approximately 500 visits from German servers. That doesn't mean they read more than the first chapter lol. Also, you're the only one I know of right now that reviews, so you're like twenty times more awesome ;). Db, it's feedback like yours that encourages my perfectionistic tendencies. Thank you for giving my story a chance and taking the time to give me a review with a bit of critique in it, I really appreciate it. Addiena-Saffir, I'm rather interested in what made you think it was done lol. They'll meet Derek...fairly soon. I can't give you a chapter number, but it'll happen. and 6tigercubs, you guys are sweet :). Glad you enjoyed that chapter. IDIC, sooo...You're right that the bit you pointed out was rushed and I want to apologize for that. I mentioned a couple of chapters ago to a reviewer that sometimes Reid's awkward stutters in the smut scenes are actually mine...And that was one of those times. I got nervous and rushed it, and I'm sorry that it affected the story. I'll be careful not to let it happen again.

Warnings: Smut, slash, language, the usual.

Disclaimer: The original characters and any borrowed plot ideas belong to Mark Gordon Company, and the writers of Criminal Minds. And all the channels that run the episodes, I suppose.

Recap:

When Derek finally pulled back, both he and Spencer were gasping and flushed. Blood smeared their lips and Spencer's chin.

"That, Pretty Boy, was a kiss."

Key to My Chastity Belt

… … … Flashback: Derek's POV … … …

Derek shifted from foot to foot, not sure how to deal with the kid now that he was here. He watched Spencer remove his shoes and struggled to find something to fill the silence. What did people say in situations like this? Derek knew what he wanted to get around to, but not how to get there.

"How was your day?" Derek leaned against the door frame of the kitchen, glaring at the floor like it had offended him.

I think I just made this unnecessarily awkward.

"Um…Long…" Spencer looked at him questioningly. "How was yours?

Derek shrugged. "Same I guess. Had a math test. I don't think I failed it. So…I didn't see you around much today."

He should have at least come to lunch.

"You usually don't. We don't have many classes together and I don't like to attract attention in the halls…"

Derek wasn't sure how to approach the open ended question.

When in doubt, avoid.

"True," Derek straightened and headed into the living room. "You should call your parents and tell 'em you came home with me."

Avoidance is not going to bring him back to my house. Don't be a pansy.

"Actually…" Derek gripped the door frame and stared fixedly at a spot on the wall over Spencer's head.

Just say it. It's not going to get any easier if you wait.

"You should probably tell them you'll be coming home with me every day. Unless you have, like, family plans or something."

Derek turned abruptly and retreated back into the living room before Spencer could respond.

If I were any paler, I'd be blushing. That was so embarrassing.

Derek was pretending to study his history when Spencer sat down beside him, a fair distance away.

"What's your homework for tonight?"

"There's nothing due tomorrow. I just have this history test coming up on Friday. It's covering three chapters and I figured you probably wouldn't want to help me cram the night before," Derek grinned a little ruefully.

Spencer rolled his eyes, "Gosh, I appreciate that. Alright, we'll do a chapter a day and an overall review Thursday night. Your teacher's Ms. Haverty, right? She's a fan of throwing in a few random details only mentioned in class. I don't suppose you took thorough notes?"

Derek cleared his throat and held out five sheets of paper. Spencer stared at him until he set the papers back down and looked away, sheepish.

"…When we're done, you're going to tell me your classes and who's teaching them, and I'm going to tell you how many pages of notes you should be averaging per day. Now, what chapter are you on?"

Half an hour later, Derek was bored out of his mind. But he knew the chapter like the back of his hand.

And now that work is done…

"I'll take your book home and make study guides for the other two chapters tonight. You can have them in the morning, okay?" Spencer looked up to find Derek watching him with a faint smirk, eyes gleaming. He cleared his throat, "Ummm…yes?"

"We're done now, right?" Derek asked, his smirk growing minutely.

"I-I guess s-AH! Derek!" Spencer yelped as Derek took a fistful of his hair and used it to twist him about forcefully and shove him face first into the couch.

"Good. I have a couch to break in. Do you own any turtlenecks, Pretty Boy?" Derek growled, pinning Spencer down with his body weight.

Those marks didn't last long enough. Pretty Boy's gonna be a walking bruise tomorrow.

"Y-yeah…"

"Perfect."

When Derek collapsed back onto the arm of the couch forty-five minutes later, Spencer was shirtless and his torso was covered in cum, both his own and Derek's. Beneath the milky white coating was a fresh collection of bites marks, far more vivid than the yellowing bruises they replaced. His hip bones bore matching sets. This time, the trail ended halfway up his neck. The hickies hid the faint handprint shaped bruise that circled his throat. His wrists were red and raw from being pinned and twisted.

The kid had never looked more lascivious. Derek needed to get him cleaned up before he finished what he'd started. He leaned over Spencer's prone body.

"You alive, Pretty Boy?" Derek chuckled.

Spencer made some sort of expression that Derek was fairly certain was supposed to be a smile, and his insides warmed in response. Derek wiped the mess from his stomach with a damp cloth and smiled when the younger boy stretched like a cat. When he'd finished, Derek grabbed the shirt that had ended up on the far side of the room and tossed it back to Spencer, who looked reluctant to move.

"C'mon, you can do it," Derek laughed. "I can't have my mother thinking, well, knowing that I defiled her precious sofa."

"You sound so apologetic," Spencer quipped, muffled by the shirt he was pulling over his head.

Derek stalked closer silently. When the shirt finally came down, he buried a hand in Spencer's hair, twinning through the tangled strands. "Tell me that you are," Derek made his tone husky and promising, intentionally messing with Spencer's head. He was pleased to see the kid respond so well, exposing his battered neck with no resistance.

"That's what I thought," Derek released him and gathered his pitiful excuse for notes, tucking them into their folder.

"So where is your mother? Isn't she usually home by now?"

"Works late on Mondays and Tuesdays," Derek called as he headed up the stairs to put his school bag away.

So I have you all to myself… Or apparently not.

Spencer was putting on his shoes where Derek came back down.

"Going home?" Stay.

"Yeah, I told my mother I'd be home for dinner. And I have homework to get done, too." Spencer turned and grabbed his coat.

I want you to stay.

Derek saw a broad smile stretch Spencer's lips.

And you obviously don't want to.

"Who the fuck gets this happy about homework?" Derek was rapidly losing a battle with his temper.

"Not about homework," he laughed, starting to zip up his jacket.

"What then?"

What replaces me at night?

"You."

…Uh.

Derek was both speechless and thoughtless. He stared dumbfounded for several moments. Then he swatted Spencer's hands out of the way and pulled the zipper of his jacket all the way up to hide his abused throat.

Then next time…stay. Please?

"Stay for dinner tomorrow. Finish your work while I work on my study guide," he mumbled.

Spencer grabbed his bag and trotted down the front steps, "Will do!"

Mine.

… … … End Flashback … … …

Spencer tried to gather tumbling thoughts when Derek pulled away. He wanted another kiss like that. Wanted more than a kiss really, but he'd take anything Derek was willing to offer.

I have to redo at least half of my research. This changes the parameters completely. A kiss indicates a far greater emotional involvement than simple physical pleasure. If a kiss is possible then… Unless I'm reading too much into all of this. That wasn't a soul-searching kiss, it could have simply been another expression of dominance because I—

"Ungh!" Spencer arched, grunting at the feel of rough denim pressing threateningly against his hypersensitive cock.

"Pretty Boy, exactly what does a guy have to do to keep your attention?" Derek's voice was rough in his ear, displeasure woven through the question.

"You have it, you do, I promise!"

Derek shifted to sit back on his heels to straddle Spencer, who held in a whimper at the lost contact. He tried not squirm under Derek's cool gaze.

I don't understand this complex. He's expressed concerns over this several times and it makes no sense. Why does he doubt his ability to hold my interest? A young man with as much experience as Derek has should be flaunting it. He should be feeling particularly full of himself right now, following a successful display of dominance and mastery of a skill. Such a conundrum—Now is not the time for this, Spencer. Assuage his concerns, or he might not kiss you again… Crap, he might not want to kiss me again!

"I just-I was hoping-can we do that again? Frequently?"

Derek smirked slightly—Reassurance accomplished—and leaned down, brushing his lips over Spencer's teasingly. "Yeah, kid, we can do it again. But we gotta let this heal first," he stipulated. Derek gripped Spencer's chin in one hand and ran his thumb over the broken skin. "Come on, let's get you cleaned up. You look like I smacked you."

Spencer clambered off the bed and trailed happily behind Derek into the bathroom. He perched on the edge of the tub while Derek retrieved a washcloth and ran warm water over it. At Spencer's recommendation he added a small amount of soap.

"You know that's gonna make it sting more," Derek cautioned, working it into a light lather.

Spencer shrugged. "Maybe so, but our lips come in contact with a minimum of one thousand pathogens on a daily basis. They lack the oils our skin produces to act as a pathogenic barrier. Saliva plays a small role as an antibacterial agent, but it's not 100% effective."

"I'll take your word for that." Derek dabbed at the jagged split. Spencer waited quietly for him to finish, trying not to flinch and moving his head when instructed.

"Jesus, you bled everywhere. I think that's all of it." He stepped back and looked Spencer over. "How the fuck did you get it on your shirt?"

Spencer plucked at the shirt and pulled it over his head and off to get a better look, ruffling his hair further. "I'm sorry…It's not that much and it should come out if we treat it. But you can't really be surprised that the laceration bled a lot. It's similar to a head wound. The skin comprising our lips has only three to five layers of skin cells at any given time, making it much easier to break through than the rest of our skin, which has approximately sixteen layers. Also underneath this very thin layer is a particularly large branch of the facial artery, so one should really exp—Mmmm…" A hot tongue invaded Spencer's mouth, cutting his lecture short.

His lip throbbed painfully, but Spencer ignored it in favor of sucking hard on Derek's tongue. The answering moan spurred him on.

Tastes like pizza and Derek.

Spencer dropped the shirt and reached up to wrap his arms around Derek's neck, only to be pushed away by a gentle resistance. Derek held him at arm's length with a firm grip on his shoulders. His head was bowed and his muscles trembled with Spencer recognized as restraint.

"Do you have any idea how hard you're making this?"

Hard…Ye-No. No, stop twisting meanings. Hard like challenging? Hard like a problem? I'm a problem? What did I do? I did something wrong. What did I do? What could have changed? The kissing. Kissing is emotional. Now it's a problem. Why would it be a problem…Previous emotional commitment. I knew it. He has a girlfriend. There's someone else. No, no there's not. There's no 'someone else' because there's no 'us.' This is not exclusive. If you start crying right now, no chess until next Christmas. Besides, he always with you. When does he have time for anyone else?

Spencer bit his tongue and tried to get control of himself.

"It's impossible to hold back around you. How the hell am I supposed to wait when you keep pulling the innocent nerd shit?"

Wait? On what? So this isn't about a girlfriend? Or is he waiting on…something until he breaks up with his girlfriend? I can still play chess? When did he find time for a girlfriend?

Spencer tightened his muscles to keep from sagging in relief. The tears would have been inevitable.

"I mean, I'm a teenager. Hotch can only expect so much out of me, you know? At this rate, I'm gonna have to buy you one of those freaky metal diapers with the lock and give him the key!"

Hotch? What does he have to do with this? Is he with Derek? I can see where he'd have time for that relationship. Why does dating Aaron require me to wear a chastity belt? More importantly, why does Aaron get the KEY to my chastity? This is getting ridiculous.

Spencer opened his mouth to say so, but Derek just kept plowing forward. He'd released Spencer's shoulders and was rubbing his temple with one hand.

"No. I'm stronger than this. Right? I have discipline. I can do this. We can do this. I will wait until next January. You'll help me, right? No more subconscious teasing and taunting? I mean, the kissing makes it ten times harder. How am I supposed to settle with just your mouth? How can I not want to taste everything? And once that starts there's no fucking way I'll be able to stop. And then Hotch is gonna kill me! Or maybe he'll just skin me and leave me to suffer…

Why does tasting more of me result in death-by-Aaron? And tasting more of me how, exactly?

Derek had Spencer's full attention at that, but he'd ranted off the topic completely already. Spencer needed to get him back to that bit.

He can't keep going if he's otherwise occupied. If it worked on me, it'll work on him.

Spencer reached out, grabbed Derek's collar and hauled him forward, clumsily pushing their lips together. Derek's mouth was wide open, so Spencer took advantage and set about mimicking Derek's techniques from their first kiss.

Incredibly effective. Good for stopping conversation. And brain function…

True to the nature of their relationship, Spencer wasn't able to keep the stolen dominance for long. Derek surged forward, knocking him backward into the bathtub. He barely managed to catch Spencer's head before it could crack against the opposite side.

"I tell you that I need your help controlling myself and this is your solution," Derek growled, pulling Spencer upright, then off the edge and into his lap.

Spencer found himself straddling Derek's waist, crossed legs keeping his thighs spread wide. He shifted awkwardly, wrapping his legs around Derek's hips and interlocking his ankles.

Spencer bucked forward when teeth clamped down on the bare skin of his shoulder. His body was rapidly responding and he could feel Derek's cock hardening against him. Derek hadn't even bothered to zip his pants after that kiss.

How was that not uncomfortable?

Spencer needed to speak before he lost all his thoughts completely.

"D-Derek, hang on, wh-Ooooo," Spencer moaned, arching into the fingers twisting his nipple roughly.

"Hang on? Pretty Boy, you started this," Derek whispered harshly in his ear, pulling on the abused pebble of flesh. Spencer mentally cursed his moment of 'brilliance' for that one.

"Ah! I-I know I just-What are you supposed to be-mmm-waiting on?" Spencer practically purred as Derek's nails ran softly down his back until he was cupping Spencer's ass, lips trailing down his chest with gentle kisses.

Derek paused at his neglected nipple and blew across the dusky skin, smiling when Spencer shuddered. "Fucking you, Reid. Hotch wants me to wait to fuck you until you turn sixteen." He bit down on the flesh, simultaneously pressing two fingers up to rub small circles against Spencer's clenching entrance.

Spencer shouted in surprise, jerking upwards to flee the intrusive pressure. Or trying to anyway. Pain from the sudden movement brought his attention back to his captive nipples. Derek kept a firm hold with his fingers, releasing the one in his teeth.

He wants to have interco-sex with me. More research. This is beyond any parameters I've established.

The mocking smirk made him throb with want and a hint of shame. "Keep it down, baby boy, or you'll wake the neighborhood." The two fingers pressed harder, eliciting a pitiful mewl from Spencer.

Derek released his other nipple and dropped the free hand to Spencer's waist, forcing him down to grind their hips. He dug teeth into the juncture of Spencer's neck to hold him in place, increasing the speed of his taunting circles.

Spencer reached down to free his trapped arousal. He wanted to feel Derek's length against his own again. Wanted to feel the answering throb as they both came.

Derek had other plans. He released Spencer's waist to catch the slender wrist, rolling their bodies to pin Spencer beneath him on the cool tile floor. The new position forced their groins together.

"No, no, not this time. You're gonna cum in your pants, Reid. I want to see that adorable flush of humiliation again."

In contrast to the cruel words, Derek's tone was fairly gentle. It made Spencer's ears burn, because the thrusts of his hips were anything but. Derek freed the captured wrist to muffle Spencer's moans, leaving Spencer to claw at the floor with one hand and cling to Derek with the other.

Spencer gave a breathless cry as he came, barely audible past Derek's hand. As were the high-pitched gasps that followed as Derek chased his own completion against Spencer's tender body. The hot fluids of his orgasm mixed with Spencer's to spread through the thin fabric of the borrowed pants. He pulled his hand away to press a quick, bruising kiss to Spencer's parted lips.

As he struggled to return his heartbeat to a normal rate, Spencer uncrossed his ankles and let his feet fall to the floor. The soaked material rapidly chilled against his skin. Spencer felt the familiar rush of heat to his face. To use Derek's satisfied smirk as a judge, his face was clearly portraying the embarrassment Derek sought.

Derek's eyes flashed possessively. "The best part of all of this is that you have no clue how completely transparent you are, you know? It's written all over your face how much you love this."

Spencer had to look away in the end, turning his head. His neck ached faintly and he knew he'd have a few more hickies in the morning. He'd missed them. He'd missed this feeling of being owned more. It made his insides twist in a strange mix of under-fed need. Spencer still couldn't identify what he needed more of.

Pushing the thoughts aside, Spencer scrambled up as soon as Derek stood, still smirking. He slipped by and moved towards Derek's bedroom, intent on removing the stained pajamas before Derek could tease him further.

His momentum was halted by an arm around his middle.

"Where are you going?"

"To change," Spencer grumbled.

"Did I say you could?" Derek's fingers stroked Spencer's stomach lightly.

"No," Spencer's voice wavered, his eyes tightly shut.

"I want you to sleep in them. I want to be the last thought on your mind when you fall asleep and the first thought when you wake up." Derek turned Spencer bodily and kissed him once more. Chastely, almost. "Sweet dreams, Pretty Boy. I'll see you in the morning."

Spencer didn't have a voice to answer with. He stood silently in the hall for several minutes after Derek left. He couldn't sleep naked comfortably. And…he rather liked the idea of sleeping covered in Derek's seed. The heat tripled and he ran into the spare bedroom, nearly slamming the door behind him.

As he huddled under the covers trembling, half aroused at just the feel of the damp fabric on his groin, Spencer thought he'd never get to sleep at all.

Saturday

He must have fallen asleep eventually. The first thing he noticed was the faint light gleaming through the blinds. The second was his painfully hard erection, caused by those "sweet dreams". It took fifteen minutes of physics and the mental dissection of a frog to keep his thoughts from returning to the cause of the sticky material plastered to his skin.

As deliciously debasing as the feeling was, though, Spencer needed a shower. Badly.

Keeping his steps as light as possible, Spencer crept past Derek's open door and into the bathroom. He rushed his shower, skipping the hair ritual completely and dressing before he even left the bathroom. Thankfully, Derek's bite marks were low enough that a turtle neck wasn't necessary.

Spencer was already enjoying his second cup of coffee (blueberry, much to his delight) with Ms. Morgan when Derek finally made an appearance. Breakfast that morning turned out to be omelets and hashbrowns. Derek wisely kept his hands out of the vegetables Spencer was chopping.

The rest of the morning was spent getting Derek ready for the essay questions on his upcoming literature midterm.

When Spencer prepared to leave at noon, Ms. Morgan made a point of checking the laundry while Derek kissed Spencer goodbye. The kiss ended with a gasping Spencer backed into the door and whispered promise from Derek that next time he was going to make up for not joining Derek in his bed earlier that morning.

Spencer contemplated the dynamics of Shakespeare's Comedy of Errors and resolutely refused to consider his next evening at Derek's.

He spent the rest of his weekend helping his mother grade papers and playing "Go" with his father.

He wasn't prepared to deal with the research that would be necessary to initiate intercourse with Derek. Besides, thanks to Aaron, Spencer had plenty of time to prepare himself. If it was going to be a mutually pleasurable experience for both of them, he'd have to focus on himself as well now.

Monday

"Christmas break! Christmas break!" Adam was practically bouncing in his seat.

Rob chucked his empty milk carton at him. "Would you shut up already? We still have to finish tomorrow and like six more midterms."

I really don't understand what's so bad about midterms. They aren't that challenging.

Spencer knew better than to voice his thoughts, so he continued eating.

"I just hate the family hopping. I wanna stay home for once," Derek groaned.

Grumbles of assent around the table.

"What?" Spencer paused, his sandwich halfway to his mouth.

"My mom always drags me off to visit some obscure series of relatives on holidays. They all drive me nuts." He punctuated the comment with a stab at the rock hard brown rectangle, presumably a brownie before it was burned.

"So…you're going to be gone all month."

"Well, yea-Shit, I didn't tell you."

"No, you didn't."

This behavior isn't conducive with his reputation. He's acting like someone who's never been in a relationship before.

Lunch ended in an uncomfortable silence once again.

This time it carried over to the walk home. Spencer managed to set his annoyance aside for tutoring, but it clouded his expression as soon as the others left. Aaron had forbidden another pizza dinner until further notice, so the team was gone before dinner, leaving Derek and Spencer alone.

"I really am sorry."

Derek had apologized seventeen times now. Seventeen and a half if Spencer counted the one that he'd cut off by throwing a pillow at Derek to shut him up.

Spencer put away the last of the dinner dishes he'd dried and turned to face Derek.

"I know! I told you I accept your apology. All of them It's not like you stood me up or something. I'm just glad I found out you were leaving beforehand," Spencer said, grabbing his bag.

"But-"

"Derek, it's alright. I'll see you at lunch tomorrow, ok?

"Yeah…Ok."

Derek kissed him softly and Spencer headed home, just beginning to realize he'd probably overreacted.

… … … Flashback: Derek's POV … … …

Derek couldn't believe how well the week had gone.

Spencer came over every afternoon. The team had been awesome about letting him right in. Spencer had definitely sped the process along when he freaked on Adam.

Derek chuckled as walked into his first class of the day. He wished he could have been there to see that.

He got to the door of his Geometry class and sighed.

Really don't want to take this test.

There was a slip of paper on his desk already. Derek picked it up and turned it over.

"Good luck on your test—P.B."

Pretty Boy…

Derek's head felt light and numb, his stomach dropped like he was riding a roller coaster and his chest ached. But it all felt good. And out of control.

What the hell is wrong with me?

… … … End Flashback … … …

The votes so far come up to all but one wanting the flashbacks to stay. So far my favorite concept, and the general consensus, is to start swapping out Derek's POV for Hotch's or the team's or some other angle. I think that'll be fun to try and it'll give everyone a closer look at characters we miss out on with the omniscient factor. I may try it out in the next chapter if it suits the flow of it. A request for you all, also. I've gotten a few comments in reviews now about my story being pretty realistic and that this adds to it. I want to keep that realism, but I'm not sure what I'm doing that's making it so real for my readers. If any of you have any one point that's stood out to you as strongly realistic, or unusually off base, could you point it out to me in your review? Thanks so much!