AUTHOR'S NOTES : This is written by request of smartassmusicjunkie94, who wanted tension between Castiel and Sam, regarding Castiel's relationship with Dean. I hope that this story is gonna be okay ... :0)

Dean looked across the field, eyes playing over several dead bodies of exanguinated cows littering the verdant green grass in black and white swathes. He squinted into the sun, hand held over his eyes to shield them as he took in the damage done to one poor farmer's herds. He shook his head, couldn't even begin to imagine the extent of the farmer's loss to his livelihood, before he turned to face his brother and Castiel standing directly behind him.

"Okay, this looks like our kind of deal," Dean sighed, nodding his agreement reluctantly to Sam, despite earlier misgivings that the case wasn't for them.

He'd been all too ready to pass over this case, to leave it to the ASPCA to investigate, all too ready to find another hunt to work instead. Besides the exanguinated cows in the field beyond, there had been reports of dead goats and sheep too in this town alone. Dean had originally thought it some kind of disease affecting livestock, but even he had to admit now that it looked like something more sinister was at work. Sam smirked in an "I told you so" grimace at the extent of the deaths spread out in literally black and white before their eyes.

"Any ideas what caused this?" Dean asked, gaze flickering from Castiel's face to his brother's.

Castiel remained silent, intense gaze vaguely uncomfortable as Sam shrugged expansively beside him.

"Chupacabra, maybe?" the younger Winchester asked, uncertainly. "It's the only thing that immediately springs to mind that could cause so much damage to livestock."

"Oh, you think? I thought they only sucked the blood from goats, not sheep and cattle," Dean commented, walking away from the scene of the carnage, when a cloud of flies became too insistent on investigating his eyes, his ears, his face.

"Not so. I think they feast on anything if they have the mind to," Sam mused, as he followed his brother away from the field, Castiel silent and brooding in his wake.

"You find out anything?" the farmer asked when he saw them, thinking they still were members of the ASPCA themselves.

"No, sir, nothing conclusive. We're gonna go into town, see if we can follow up more leads," Sam said, offering the farmer a polite smile of reassurance on his way past.

The farmer nodded absently, removing his cap and running his hand over his balding head. Castiel passed him, gently laying a hand of sympathy on the other man's arm, before he was guided away by Dean before the angel could say anything.

"Don't mind him, he's new," Dean said, by way of explanation, when the farmer looked at Castiel quizzically.

The farmer remained silent, watching them until they climbed into the Impala and drove away, thick, choking clouds of dust from the dry road following in their wake. Only when they turned right at the intersection did the farmer move, walk away from the scene of the bovine carnage with a sad shake of his head.

Sam left Dean and Castiel in the motel room, looking on the younger hunter's laptop, while Sam himself went into the town proper, searching the library for clues and information on chupacabras and getting the lunch while he was out.

Castiel remained silent as Dean read out random information he found while scrolling through browser window after browser window, eyes flickering over pages of text and photos, light from the screen flickering across the hunter's face and shining in his eyes, making them look greener than usual. Castiel was content to watch him, to listen, fingers stroking over Dean's forearm, across his knee in shimmering, tickling patterns to make the hunter shiver pleasurably. Finally, Dean's voice trailed off, too distracted by the angel sitting beside him to read further, eyes locked with Castiel's, breath mingling as he leant in closer.

"Cas," Dean said, voice gruff, hoarse, needy, a whisper against Castiel's plump lips.

The angel's eyes closed halfway, turned alluring, a promise held deep within his gaze as he smiled at Dean, eyes crinkling at the corners as his fingers stroked and laced behind Dean's neck. The hunter gave in, closed the distance between them, pressed a kiss against Castiel's soft mouth, lips working against warm lips, tongues probing and playing in each other's mouths amidst pleasured murmurs of shared satisfaction.

Dean set Sam's laptop aside, too mindful of it crashing to the floor and breaking, before he allowed Castiel to manoeuvre him onto his leaning elbows, angelic body pressed tight against his. Castiel unzipped Dean's jeans, peeled them away from sturdy hips before slipping his fingers inside his lover's boxers carefully. Dean's eyes closed, lips parted as he felt the angel's slender hand dipping still further, fingers wrapping around the hunter's stiffening cock gently.

Dean opened his eyes once more, saw Castiel's eyes were downcast, dark eyelashes fanning out across his cheeks as his tongue lapped out across his ripe mouth in concentration. Dean started bucking his hips into Castiel's questing hand when the angel started stroking the hunter's dick, bringing Dean to full attention, smearing pre-cum over the stiffened surface in firm strokes.

Dean's breath wheezed in his chest, pleading mewls working free from constricted throat as his head fell back, sensations coursing through him and washing him clean of everything but the feel of Castiel's hand pleasuring him, touching him, jerking him off skilfully. Dean's back arched, limbs stretching as he came, filled his lover's hand with his thick release, marking his boxers with his seed, Castiel's name thick and heavy on his lips.

He fell back, Castiel swiftly following, chasing his mouth with pouting lips and claiming a kiss from Dean's pleasured mouth, unaware that they had an audience, peering in through the open motel room door. Sam turned away, eyes wide with numbing shock, fingers nerveless, grasping a sack of food uselessly as he stared blindly across the street. He closed the door behind him quietly, walked back to the car, leant against the shining hood before he covered his face with his free hand, hoped to wipe all that he had seen from his memory, yet found that he couldn't.

He'd always suspected that there was something going on between Dean and Castiel, wasn't blind or stupid against their shared, yearning looks, had even thought he'd heard kisses coming from the main room while he was in the bathroom on more than one occasion, but had never actively seen his brother with Castiel, beside the shared stares.

He didn't know what he was supposed to do, or what he was supposed to say now to them. He didn't even know if he could act the same way around them any more, now that he knew the truth of their relationship. He was pleased for Dean, that he seemed to have found someone to finally be with, seemingly settle down with, yet he hadn't expected his brother would end up with a guy, not the girls he'd always chased in the past. He was still sitting there when Dean came out, staring a question at him while the food grew cold in the sack the younger hunter still held in one shaking hand.

"You alright, Sammy?" Dean asked, green eyes deceptively innocent as Castiel came to stand in the doorway behind the older hunter, face just as innocent as Dean's currently was.

Sam felt like screaming at them, shouted that he knew what they were u p to, couldn't quite decide how he felt about his brother sleeping with a guy just yet to say anything of it immediately. Instead he faked a smile, didn't even look at Castiel as he went into the motel room, before he flopped down upon his bed, a determined cast to his face. He only hoped that if he ignored it, it would go away.

And pigs might fly, he murmured to himself, as he caught the brief brush of hands as Dean passed Castiel, the gentle, loving look passing between the two as Sam made an excuse of not feeling too good, and previously needing the extra air. Neither Castiel nor Dean said anything to Sam's words, and neither did it look as though they believed him. Their disbelief remained unchallenged, unsaid, left for another time when Sam felt ready to talk. Dean knew Sam, knew his brother often took time to spill what was truly bothering him, and Castiel was getting his first taste of it.

Sam tried to remain normal, studiously avoiding eye contact, body contact with Castiel and if the angel noticed, he remained quiet about the slight. Dean noticed, mouth pinched tight in a bow of disapproval, wondered what Sam's problem suddenly was with Castiel. His mind was distracted from his brother with further talk of the chupacabra, its whereabouts.

They finally decided to start the search for the chupacabra at a local disused mine on the outskirts of town, after Sam showed them an outdated map of the area borrowed from the library. It seemed the likeliest place to at least start looking, and Dean couldn't help but notice that his brother didn't even look at Castiel, when the angel suggested driving out to the mines straight away.

He sighed, followed his brother from the motel room, bringing the remainder of the food with him, Castiel following in his wake, a gentle smile for Dean on the angel's face. The hunter leant in, claimed a kiss quickly from his lover, before climbing in to the Impala, glancing at his brother, who was studiously staring out of the windshield, arms crossed, face closed down tight in a typical bitch face of Sammy doom.

"What's with you today, Sammy?" Dean asked, voice gruff as he started the car and pulled out of the motel parking lot, eyes trained on the road in determination.

"Nothing. I'm fine. What's with you?" Sam retorted, in the most immature fashion.

"Me? Fine. What's with you, Cas?" Dean asked, trying to make light of the situation, the sudden tension in the car in the hopes of at least making his brother smile.

"Excuse me? Should there be something wrong?" Castiel predictably asked, leaning forward to stare at Dean in the rear view mirror, blue eyes clouded with confused concern.

Sam stifled a sudden laugh at that despite himself, in turn making Dean grin.

"No, Cas. You should be fine, dude," Dean replied, before popping in a Metallica album to mask the heavy silence from his brother.

"Understood," Castiel murmured, settling back in his seat, tucking his coat around his slim body as he watched the scenery whirl past his window.

Dean smiled, felt love blossom still further in his chest for the angel, tried to concentrate on the road ahead, too tempted to stare at Castiel, to watch him, to snuggle into him and kiss him. He cleared his throat, blinked, forced himself to concentrate on driving, no longer paying attention to his brother's pointed glares, his heavy silence, his strained pouts of tension beside him ....

The mines were dark, close around their walking bodies, with the smell of musty disuse hanging thick and heavy around them. Dean followed in Sam and Castiel's wake, shining his torch in great backlit swathes around his body, checking the ceiling supports almost obsessively, flinching at every creak, every groan that came from overhead. He remained silent, trudged ever onwards into the darkness, coal dust drifting down in blackened motes with every shift of the earth above him. He shuddered, hoped that their trip down into the disused mine would be a short one, that they would find the chupacabra, waste it and then leave, attain the safety of fresh air and open space once more.

He tried to catch up with Castiel, turned back when he thought he heard a noise behind him, wondering if it was the chupacabra shadowing them, ready to suck their blood from their still living bodies in place of the livestock it usually preferred to feast upon. He stopped, waited, listened, but couldn't hear the noises repeated from behind. He narrowed his eyes, wondered if perhaps he'd imagined things in his desperate need to do the job, finish the hunt, then leave the mines for good. He sighed, continued to listen and still heard nothing, no movement at all.

"Cas? Sammy? I thought I heard something following us," Dean called over his shoulder, just in case he was right and there was something there worth investigating, yet received no response from his brother, or the angel.

Dean frowned to himself, turned slightly, tried to catch sight of them walking ahead of him, but saw nothing. The way ahead of him was empty, devoid of life, leaving him the only one there in the main shaft.

"Dudes! Hey! Cas, Sammy, this isn't funny, you know," Dean yelled, casting his flashlight about his own body frantically, trying to catch sight of his brother's tall form, the angel's smaller, more slender body.

There was no response, no familiar voices from either Castiel or Sam, only silence and the far off sound of a rumbling, clattering rock fall breaking the ominous air.

"Son of a bitch, where the hell are you?" Dean grumbled to himself, pressing ever onwards into the darkness, eyes straining into the mine shaft in hopes of catching sight of Sam and Castiel, even though he knew there was no hope of seeing them from where he now stood. Dean realized that he had no choice but to press ever onwards and hope that he'd catch up with his brother, his lover before the chupacabra got to him ...

-tbc-