The bunker had that familiar low hum to it—the sound of old pipes, ancient wards, and Sam laughing way too hard at Dean’s expense.

Dean was leaned back in one of the library chairs, boots kicked up on the table like he owned the place (he acted like he did), arms crossed over his chest. He looked infuriatingly relaxed. Unbothered. Un-blushable.

“I’m tellin’ you,” Sam said, grinning as he flipped a page in a lore book he wasn’t actually reading, “everyone’s got a tell.”

“Yeah,” Cas added mildly from across the room, head tilted. “Humans display involuntary physical reactions when embarrassed. Increased heart rate. Facial flushing.”

Dean snorted. “Well, congrats, Cas. I’m not embarrassed.” His eyes flicked over to you, smug. “Nice try though.”

You stayed where you were, perched on the edge of the table, watching the whole thing unfold. Sam tried compliments. Cas tried blunt honesty. Even Jack had chimed in with an earnest, “Dean, you’re very cool,” which had earned a fond but unflushed smile.

Nothing worked.

Dean Winchester was rock solid. Unshakeable. Smirking like he’d already won.

You tilted your head, lips curving slowly.

Interesting.

“Alright,” you said calmly, sliding off the table. “You boys are doing it wrong.”

Dean’s gaze followed you instantly, green eyes sharp and curious. “Oh yeah?” he drawled. “You got a better idea, sweetheart?”

You didn’t answer. You just walked over.

The room seemed to quiet as you stopped in front of him. Dean looked up at you, eyebrow lifting, mouth already quirking into that cocky grin—until you reached out.

One finger slid beneath his chin, warm and deliberate.

Dean froze.

You tipped his face up just enough to meet your eyes. You could feel it then—the split-second hitch in his breathing, the way his bravado faltered just a hair.

You leaned in, close enough that your breath brushed his lips. Close enough that the world narrowed to just the two of you.

“My good boy,” you murmured.

The effect was immediate.

Dean’s brain absolutely shut down.

His mouth opened like he had something to say, then closed again. His ears turned red first—bright, unmistakable—before the color rushed across his cheekbones. His eyes went wide, then unfocused, like every coherent thought had short-circuited at once.

Sam burst out laughing. “Oh my—no way.”

Cas blinked. “Fascinating.”

Dean swallowed hard, Adam’s apple bobbing. “I—” He cleared his throat, tried again. “I gotta—” Another pause. He dragged a hand down his face, groaning softly. “Son of a—”

You pulled back just enough to smile at him, thumb still resting under his chin.

“There it is,” you teased gently.

Dean finally looked at you again, flustered, pink-cheeked, completely undone. “You… you cheated,” he muttered, voice rough.

You laughed, leaning in to kiss his forehead before stepping away. “Nope. Just know my boyfriend.”

Sam wiped tears from his eyes. “I’m never letting you live this down.”

Dean shot him a look that lacked its usual bite, then glanced back at you, still blushing, still stunned—and smiling like he didn’t mind one bit.