AN: Kind of a fluffy, shmoopy, smutty chapter... I needed for Dean to cross a line last chapter. I needed Dean to get a little dark with Sam because there's never truly a line until you've crossed it, even just a little, so that you could see that there definitely is one. So this is the sorta making-up-for chapter I guess? And then kind of a little twist at the end hehe. Unedited. Forgive any typos.

.~*~.

"Dean?"

Dean jumped at the sudden, unexpected presence of his brother at the doorway to the bathroom. He'd just showered and was still dripping wet as he scrambled for a towel to throw around his waist. The room was still a bit steamy. "You should go eat something," Dean replied, his gaze steering clear of his brother.

"Dean, why are we back here?" Sam asked, taking a step further into the room. "I thought you said we would break to eat, then keep going."

"We are," Dean retorted flatly. "What's it matter if you eat here?"

Sam's brows furrowed and he stepped closer.

"You should go eat, Sam," Dean said, stepping backward away from him, still dodging his eyes.

"What's wrong?" Sam asked, concerned.

"Nothing's wrong," Dean replied with a shake of his head. "Just you need to eat, okay? And you should...probably grab a shower, too..."

"I think a shower would kinda be a waste of time," Sam replied with a raised brow. "We're just gonna get bloody again."

"That's not what I meant..."

"Are you..." Sam stopped a moment, narrowing his eyes and he considered what he was about to ask. "Are you freaking out about what happened?"

"Shut up," Dean mumbled. "Go eat something, damnit..."

"You are!" Sam said with an incredulous laugh. "I can't believe it..."

"I said shut up, Sam," Dean snarled.

"You make a terrible demon, dude."

"Leave me alone," Dean whined, turning away to grab his tee shirt from the towel rack.

"No way," Sam said with a grin, shaking his head. "You don't get to freak out, Dean. Not about sex."

"It was sex with you," Dean replied, turning to face him now, meeting his eyes. "Sex with my brother."

"So what?" Sam shrugged. "You're afraid I'm gonna...have your disfigured, inbred love-child?"

"You're an asshole," Dean sighed, shaking out the shirt as he prepared to put it on.

"No, I'm not," Sam said, grabbing hold of one of Dean's wrists.

"Sammy..." his wet eyes met Sam's, a desperation in them that Sam knew to mean something along the lines of it being too hard for him. "I don't want you to hate me..."

"I can't," Sam replied, shaking his head. "I can't hate you, Dean. I love you too much for that."

"I hurt you."

"I've had worse," Sam countered, shrugging a shoulder.

"I don't even know what we're doing."

"We're saving the world. And we're celebrating our victories in the most awesome way possible," he said with a smirk.

"I can't keep doing this to you," Dean said as he tried to tug his arm free.

But Sam just renewed his grip and pulled him closer. "What if I want you to keep doing it?" he asked.

Dean shook his head as he stared into his brother's eyes. "It has to be the blood," he told him quietly. "It's makin' you want things you don't really want, Sam..."

"No," Sam said, shaking his head. "You think this is my first demon-blood rodeo? I know how the blood affects me, Dean. It doesn't give me false feelings."

"You didn't want this before," Dean argued.

"I didn't know I wanted this before," Sam replied without hesitation. "But I've always loved you, Dean. I swear to that. I've never loved anyone like I love you."

"You can't... I'm a demon, Sam, you're not supposed to love that."

"You're still here," Sam replied wetly. "You're still in there and I still love you. No matter what, that'll never change." Dean looked away and down, unwilling to believe the statement. "Do you still love me?" he asked, voice cracking involuntarily at the weight of the question.

Dean's eyes shot to Sam's. "'Course I do, Sammy. I never stopped."

"Demons aren't capable of love."

"But I do, Sam!" Dean argued, grabbing a fistful of Sam's shirt in frustration.

"And you gotta trust me when I say that I love you, too," Sam told him, placing a hand on the side of Dean's neck comfortingly.

Dean's eyes searched Sam's, wide and worried and something else Sam couldn't quite read. "I just..." Dean started, voice balancing somewhere in the middle of low and whispering. "I just feel like...like I'm doing something wrong," he told him. "Like I'm ruining you." Sam shook his head in denial. "But you're the only thing—no, not the only thing..." he said, shaking his head as he tried to find the right words. "Sammy, you're everything. You're everything that's still holding me here, and everything I'm holding on for. I don't wanna screw that up..."

"You're not screwing anything up," Sam told him, then pulled his head toward his, pressing his lips to his brother's. "I love you," he told him between kisses. "And I want this. Even when we're finished with all of this. Even when we're back to being us, I want this. And a house. And a yard. And dogs you won't let in the car..." each sentence separated by another kiss.

Dean let out a breathless, wet laugh at Sam's words, and finally began kissing him back.

Dean's skin was warm on Sam's. It was the first he'd felt it that way, he realized. He knew it was because of the hot shower his brother had just taken, but it made it seem more real; like he was with Dean and not the cold-blooded demon he'd become. That said, Sam would take him however he could get him.

Dean's eyes closed, allowing him to feel and smell and taste without distraction. He kissed Sam deeply, his hands running through and gripping his brother's hair as they moved. He felt Sam stripping his shirts free, shucking out of his jeans before pulling away the towel that Dean had tied around his own waist.

"Want you, Dean," Sam told him breathlessly.

Dean was shaking his head, pulling away. "I hurt you."

"I'm fine," he insisted.

"Want you to take me, this time," Dean told him.

Sam pulled away to look him in the eyes. "You serious?" Sam asked. Dean nodded. "Bedroom," Sam said as he tucked his face into the crook of his brother's neck, nipping lightly on the skin there.

"Huh?" Dean questioned in a bit of a daze.

"Get us to the bedroom, Dean," he told him again, wrapping his arms around him and pressing their bodies together. Dean needed no further explanation, and zapped them up to his room. Sam never flinched.

Dean found himself swooped up and roughly laid down on his back on the bed, Sam pressing kisses down his neck, shoulder, chest... Part of him wondered when he'd go for the knife and slice him somewhere to drink again. So when Sam moved off of him and reached for the side table drawer, that's what he assumed he was getting. He held his arm out for him, and when Sam crawled back over him, he looked confused at it.

"What're you doing?" Sam asked.

"I thought..." Dean started, then spotted the tube of lube in his brother's hand.

Realization came over Sam. "I told you, Dean...it's not the blood." He looked at Dean's searching eyes for a few moments longer, then snapped open the tube, gathering some of its contents on his first two fingers. His mouth was back on Dean's before his fingertips began circling Dean's entrance.

"Sam," Dean pushed him away a bit to look at him. "You don't gotta do that. Just...take me like I took you." Sam shook his head. "Just fuck me, Sam. You don't have to prep me."

"That's not how I work," Sam said, shaking his head again.

"Man, c'mon-"

"This isn't a game, Dean. This isn't about...letting me have a free punch, okay? This is about me showing you that I love you...and that I wanna make you feel good. So you may as well just shut up and deal with it." Dean looked at him furrowed brows, yet widened eyes that ended up slipping closed again when Sam's fingers resumed their movements.

Dean felt Sam move over him, slipping down his body until he felt his breath on his hip. Dean opened his eyes and looked down at Sam just before Sam's eyes looked up at him. He smiled, and then licked a stripe up the underside of Dean's swiftly-hardening cock. Then he sucked him into his hot, wet mouth at the same time he pressed his fingers into Dean's tight little hole.

"Oh fuck!" Dean cried out, neck arching as he threw his head back against the pillow. His hands gripped the sheets on either side of him as his legs splayed even farther apart.

Pre-come flooded Sam's mouth, and he moaned when the taste hit his tongue. It was sweet. Almost as sweet as Dean's blood, and Sam wanted more of it. He began sucking in earnest, bobbing his head up and down as he blindly added more lube to his fingers. Sam pressed back in with three, taking Dean's cock into his mouth as far as he could before his air was cut off. He pulled off, coughing.

"Shit, Sammy, careful!" Dean told him, voice cracking involuntarily.

"'m fine," Sam replied, clearing his throat. "Just...this is kinda my first time doing this."

"Coulda fuckin' fooled me," Dean replied in a rush out of breath.

Sam watched his brother squirm, trying to press down onto Sam's fingers since he'd stopped moving them. He grinned down at him.

"What?" Dean questioned defensively.

"You really like this," Sam replied.

"Fuck you."

"Thought you said it was my turn," Sam replied, leaning down over him again, his lips hovering just over Dean's.

"Yeah well...you better get on with it before I change my mind."

Sam let out a breathy laugh. "Somehow, I don't think that's gonna happen," he said before his mouth was on Dean's, fingers pressing in and crooking. Dean moaned a curse, body spasming beneath his brother's, and Sam pulled away to look at him again. "Yeah, you're not gonna change your mind."

"Shut the fuck up and fuck me already," Dean said through gritted teeth.

"Nuh uh," Sam told him, shaking his head. "Gonna suck you off, first," he said before kissing him again. "You taste so fucking good, Dean. 's like everything inside you is made for me to taste."

Dean would've argued, but the thought of Sam's mouth back on him again sounded like a pretty fair deal. And Sam wasted no time sliding back down his body and taking Dean's cock back into his mouth, this time using his free hand to hold the base where he couldn't quite take it in all the way.

Sam worked him over, sucking as much of him as he could manage, and completing the motion with his hand like he'd had girlfriends do for him. He'd get better, eventually. With practice, he'd learn how to deep-throat his brother's cock. Sam could do anything he put his mind to...

"Christ, Sam!" Dean shouted when Sam's fingertips pressed firmly into Dean's prostate. Sam was rewarded with another burst of sweet flavor on his tongue. He moaned as he swallowed it down. He picked up his speed, then; his patience growing thin. Sam aimed his fingertips against Dean's prostate and began tapping against it rhythmically, mimicking what his cock would be doing after this was done. Dean's moans grew in strength, back arching off of the mattress as Sam sucked him down. His hands left the sheets in favor of burrowing themselves in his little brother's hair, tightening over fists full of it, unable to make a coherent thought as to what to do with them otherwise. He felt himself arriving quickly at the end, and the intensity behind it had him panicking at some level. "Sam...Sammy..." he breathed, trying to warn his brother. "Fuck! Sam! Oh...god!" he shouted as he came hard, eyes slammed closed and head thrown back, unable to control how his hips pressed up off of the mattress.

Sam allowed his hand to finish working Dean's cock, his mouth a steady suction on its head as he drank down everything Dean had to give him. The fingers he still had buried inside of his brother were now working to stretch him; his own neglected cock eager to be in their place.

Once he'd sucked the last drop of come out of him, Sam kept his hand working Dean's cock. His fingers slipped out of Dean's stretched hole and he slicked his own cock with the abundant amount of lube that covered his hand still. Then he used it to balance himself as he moved back up to Dean's mouth, his brother still panting through the aftershocks of the intense orgasm. Sam pressed his mouth to Dean's, allowing his tongue to slip inside and run over Dean's, then pulled back.

"See how good you taste?" Sam told him, voice a little rough.

Dean opened his eyes and looked at him. "Tastes like jizz, dude. I dunno what you're talkin' about."

Sam narrowed his eyes for a moment. "It tastes like...like sweetened coffee or something," he countered. "I mean...not that exactly, but..."

"Dude, I dunno what the hell crack-like affect my blood is having on you, but it does not taste any different than any other come."

"How do you even know what come tastes like?" Sam questioned.

Dean's eyes shifted for a millisecond before responding. "Licked yours off my hand before I got in the shower," he replied. "Now...you gonna fuck me, or what?"

Sam made a mental note to pester him further later. He scooped Dean's legs up under each knee, pushing them forward, lining the head of his cock up to Dean's well-lubed hole, then put his hands down to the mattress and allowed the weight of Dean's legs to be held at the crooks of Sam's elbows. He pressed his hips forward, making sure he was lined up right as he pushed in slowly. Then he looked to Dean's eyes for any sign of discomfort as he continued. Quickly, however, the feeling of Dean's tight hole consuming his hard length overwhelmed him for a moment, and he eyes slipped closed.

"Fuck, Dean..." he said, ducking his head into his brother's neck. "So fucking tight...god..."

Dean's breath was caught in his throat, hindering him from being able to verbally respond but with short huffs of exhales as he adjusted to the feel of Sam entering him. He was impatient, though, still, and his heels dug into his brother's ass, forcing him to enter all the way.

"Oh fuck..." Sam said, stealing the words right out of Dean's mouth. "You fucker," Sam pulled partway out and slammed back in, finally pulling a shout out of his brother. "Always so damn impatient," he said as he slammed into him again.

"I'm impatient?" Dean said, finally finding his voice again. "If anyone's impatient, it's you, bitch."

Sam let out a breathy laugh. He pulled out of Dean, then repositioned himself to sit back on his haunches, yanking Dean up into his lap. "I'll show you impatient," he said, before plunging back into his brother.

"Sonofabitch!" Dean shouted through gritted teeth as Sam's cock rammed into his prostate on its way in.

Sam reveled in the way Dean reacted to what he was doing to him; his expression, the noises coming from his throat, the way his body jerked under Sam's administrations... "Like it this way, don't you," Sam grunted through his heavy breaths as he worked. "Like it when it's rough?" Dean clamped his mouth closed, refusing to answer, only meeting his brother's eyes. "Some day, Dean...when we're back to normal...when everything's done and it's just us again...I'm gonna spend an entire day...gonna take my time on you...and you're gonna love that, too..." Dean writhed before Sam, pushing himself up as Sam pounded into him. "But don't worry," Sam continued. "I'll give you what you want this time."

Dean pulled himself up the rest of the way by grabbing hold of the back of Sam's neck. He pressed his forehead into Sam's and rode him just as hard as Sam was fucking up into him. Dean's other hand slid up into his brother's hair and gripped onto it, like it was made just for that purpose. Then Sam's hand—the one that wasn't holding onto Dean's hip—grabbed the back of Dean's neck.

"You know the best part though?" Sam asked, almost whispering. "The thing that's got me on the edge?" He moved his mouth to Dean's ear. "I can still feel you in me..."

Dean was gone after that, shouts of incoherent gibberish pouring from his mouth, and spilling whatever meager amount of come still left in him on Sam's belly.

"Oh...god..." Sam's arms wrapped tightly around his brother, pulling him hard against him as Dean's hole clenched so hard around him. "Dean! Oh fuck..." his voice cracked as he cried out against Dean's neck, and he emptied out into him...

Something crashed to the floor in the direction of the door, suddenly, and both brothers turned their heads toward the noise. To their amazement, Castiel stood there at the door to the room, turning his head away and covering his eyes, a blush washing over what skin they could see.

"I...I shouldn't have barged in unannounced..."

TBC

AN: Again, thanks for your patience! I'm updating as quickly as I can manage. :)