Summary: A painful encounter with a Shapeshifter leaves Sam shaken and starts taking a toll on the boys' relationship. Unwilling to let the son of a bitch destroy everything, Dean decides he and Sam need a break from saving people if they're going to save themselves.

Title : His Pretty Lips, Another's Lies

Author : Lady Crystal Castalia

Pairing : Sam/Dean

Rating : NC-17

Spoiler : Skin

Words : 36 300

Genre: Hurt/Comfort, Angst galore, Schmoop fiesta, Smut, First time

Kinks: Bottom!Sammy, Protective!Dean, Jealous!boys, Hurt!Sam, Food!Kink, Pretty!boys, Rimming and Use of endearments.

Warnings: Mild violence and mild non-con (not between the boys)

CHAPTER 1: LIES OF ANOTHER

PART I - TRAPPED BY A LIE

"But I love you, Sammy…"

The words fell from those generous lips like drops of honey and Sam Winchester froze. After a brutal fight, he finally had the creature in his grasp, the upper hand. But the words; they got to him. They made him blink, doubt and ever so slightly loosen his grip. He was never that reckless and he would pay dearly for this one moment of insanity. As the back of his head rudely met the carpeted floor, Sam cursed himself for being so pathetic. How could simple words, lies really, make him forget for even a second that this wasn't his brother?

"Sammy, Sammy, Sammy…" The Shapeshifter sat on Sam's stomach, crushing the strong body writhing under him with Dean's weight. "You always were… such a naïve little bitch. See, that's why I always end up kicking your ass."

The Shifter put his hands around Sam's throat and started to squeeze, careful not to cause significant damage. The plan wasn't to kill Sam, just to choke him into submission. And soon, the combined effect of the beating he had endured and the lack of oxygen got the better of the young hunter. The Shifter watched with a satisfied grin as the young man's eyes lost their focus. When he was convinced all the energy had been drained out of Sam Winchester, he started pulling his clothes off.

Barely conscious of his surroundings anymore, Sam didn't attempt anything to stop him, even when he felt cold handcuffs bite the tender flesh of his wrists.

The Shifter took a little moment to enjoy the sight of the immobilized human form sprawled on the floor. But he wanted Sam awake—docile, but awake— through all of it. So he slapped Sam's right cheek repeatedly and smiled when the young man started to moan, slowly and painfully coming back to his senses.

"You have no idea how you look," the creature breathed. "What he would give to have you like this…"

Sam's eyes flew open upon hearing the enigmatic words. Too weakened to do anything, he watched the Shifter grab his ankles, and shivered with disgust as the thing's fingers ran from his calves to the back of his knees.

"Why are you doing this?"

The answer was disturbing, uttered in a mechanical tone like a line rehearsed too many times.

"I wanted you. I needed a way to get close to you. So now, I am Dean."

"You are not Dean!" Sam screamed, ignoring the pain that exploded in his skull. He was screaming his anger at himself, for falling into the trap laid out by that identity thief like an amateur.

"I guess that's why, contrary to him, nothing's stopping me from having you."

And to illustrate his point, the Shifter dug his fingers into Sam's thighs and pushed them apart none too gently. Then he suddenly went still, all senses alert like an animal sensing a predator, got up abruptly and started pulling his clothes off.

Sam saw the thing ripping its skin, muscles and bones. He closed his eyes, rejecting the image of his brother's body so horribly disfigured, and he reopened them when the sounds of melted flesh splashing on walls and bits of broken skeleton hitting the floor had stopped. He took a moment to digest the fact that he was now looking at himself. What looked like his identical twin grabbed a piece of ripped cloth and kneeled down over him.

"Shh…" the Shapeshifter whispered, securing the gag with a tight knot behind Sam's head. "I'm gonna go see big brother. It shouldn't take too long to get rid of him. In the meantime, you sit tight and don't cause any trouble."

Eyes wide, Sam shook his head no and kicked his legs but he was helpless to do anything to warn Dean. Frustrated, he groaned as he watched the thing put Sam's clothes on, ruffle its hair, scratch its skin and punch itself in order to strategically scatter wounds on its newly acquired face, neck, and hands.

When he was satisfied that he looked disheveled enough, the Shapeshifter gave Sam a warning glance, placing a finger over its mouth in an ironic gesture to remind Sam to keep quiet before he left the room.

Teeth gritting in anger, feet stomping the floor, the Shifter cursed under his breath. He hated being interrupted when he was seducing a new lover. He grabbed a small but heavy decorative candleholder from a shelf and hid it in the back of his pants, determined to get rid of the nuisance quickly so he could get back to business. He sensed Dean was getting close. He sighed heavily and schooled his features.

"Showtime," he muttered cynically.

"Sam!" Dean let the relief wash over him. Sam had managed to escape. He looked scared and lost; a little banged up, but in one piece.

"Dean!"

The Shapeshifter threw himself into Dean's arms, pressing his face against Dean's shoulder.

"Sam. You okay? You hurt?"

The reply came in the form of choked sobs.

"Sam, come on man, you're scaring me."

"He… he forced me, Dean."

"Sammy, no…"

Dean put his arm around Sam's shoulders. His eyes stung as the weight of his failure to protect little brother crushed him like ton of bricks.

"He said he did it because you secretly wanted to."

"I'd never do that! You know that, right... Sammy..?"

True to his kind, the Shifter could not resist such an easy opportunity to toy with a human prey. Playing on guilt; mixing lies with truths— it was all part of the job description. He knew Dean would rather saw his arm off than hurt his brother. But making the overprotective Winchester think his beloved Sammy now believed otherwise was too much fun to pass up. So, in Sam's skin, he offered no reassuring words and responded with an accusatory silence. Then he reached behind to grab his weapon and prepared to strike.

But Dean pulled away too soon and he ordered, "Go. Wait for me outside."

"Where are you going?"

"I'm gonna rip the son of a bitch apart!"

Things were not going as the Shifter had planned. The hunter had recovered from the initial shock that made him vulnerable and easier to manage quicker than expected, and he was now seething and out for blood. The Shifter knew, from using Dean's skills, that he would not last one round against him. He needed him close enough that he would not see the blow coming; so he gripped his rival's shoulders and begged, "I'm scared, Dean, please don't leave me!"

Dean furrowed his brow, taken aback by the outburst. For all he liked to tease his little brother about being a girl, Sam was never this dramatic. He was discreetly retrieving the gun tucked in the back of his jeans when the other man shoved him against the wall and proceeded to kiss him. Just as he was about to shoot, a sharp pain burst in his head and everything went black.

As he dragged Dean inside a room far away from the one Sam was caged in, the Shifter shook his head vigorously, wondering what had just happened. He had always planned on neutralizing Dean by knocking him unconscious. Kissing him, however, had never been part of the plan. After he had Dean tied up, he took a moment to download Sam's memories. When he was done reviewing the darkest confines of the younger Winchester's mind, he was astounded.

"I thought my family was messed up…"

He spared one last glance to the unconscious man lying on the floor before locking the door behind him.

Part II: Drowning In Lies