Disclaimer – BTVS belongs to Joss Whedon, Supernatural belongs to Eric Kripke. I own nothing. This story is for entertainment purposes only.
Summery – Buffy and Faith share a prophetic slayer dream about an upcoming Big Bad, so Faith brings in reinforcements in the form of the Winchester brothers. But soon the fight isn't the only thing that Buffy and Dean are lusting for. Only problem is, Dean's already taken...by Faith.
AN – Starts Post Chosen for BTVS, and Season 1 for Supernatural – after Bloody Mary but before Skin
Prologue
The forest was burning.
Flames soared above them, consuming the thick trees and eating up the ground, destroying everything in its path quicker than it took to take a breath. The dark, midnight sky could no longer be seen through the orange blaze and black smoke, and the burning heat was long past being unbearable.
No one could get in.
No one could get out.
But at the very center of the forest lay a small, temporary relief. He wasn't sure whether this was because of the demon's mojo, or if the witch was somehow helping them from the outside, but he knew that the circle of ground unaffected by flames wouldn't last for long. Even now, the heat was beginning to seep through. Sweat trickled down his forehead, his t-shirt stuck to his shaking body, and the hand in which he held his gun was slippery. He needed to think. Fast. But how could he think when his world was crashing down around him? When his heart was shattering into tiny pieces? When everything he had worked so hard to protect, everything he loved, was quickly slipping away?
Without lowering his gun or moving his head, he looked to his his left. His brother, barely conscious, was trying and failing to crawl to his knees. But he was too weak. The many injuries he had sustained were holding him down, the blood he had lost making his body frail.
And to his right, the second strongest girl he knew was laying on her front, her face pressed into the dirt and leaves, her dark hair surrounding her head on the ground around her. He wasn't even sure if she was alive.
"Do it!"
He looked up sharply, eyes locking with the woman standing in front of him, ten feet away. Too far. Always too far.
"Do it!" she pleaded, tears falling from her eyes. "Please! You have to do it!"
"I can't!" he yelled back, his voice hoarse.
"You have to! I can't...I can't hold back for much longer!"
"No! I'll fix you! I will, I promise. We just need to-"
"I'm not strong enough!"
"You are! You're stronger than anyone I've ever met!"
The roaring flames had become so loud that he had to scream. It teared up his throat but he didn't care. Didn't even notice.
"Please!" she begged. "I don't wanna hurt them anymore." Her eyes, filled with so much pain, mirrored his own perfectly as she glanced to her left and right before looking back at him. "You have to do it. Now!"
"How can I?" he pleaded, tears falling freely from his eyes. "I can't! I...I love you, damn it! God, I love you!"
"They'll die if you don't!" she cried. "All of them. Oh God, please! I can't...don't let me kill them. Please! You have to. Please!"
Never, not in all the time he'd know her, had he heard her beg. Not for anything. And now, to hear her pleading, begging...for this? It ripped him apart inside. But not nearly as much as the sound of the gun in his hand clicking as he cocked the trigger.
"I'm sorry," he choked out. "I'm so sorry."
And with an anguished sob, Dean pulled the trigger and, aiming straight at Buffy's heart, he shot.