"I'm gonna kill that freakin' demon."

Dean huffs to himself as he fails to stop an awful sound coming from Baby's engine once again. He'd fixed the entire damn car in record time, but nothing he did would stop the violent shaking.

"You got it started!"

You smile, coming over to him with some water. Dean sighs, taking it wearily.

"Yeah. I asked you for whiskey."

"Whiskey dehydrates you."

You scold as Dean side eyes you.

"Whatever."

He huffs, turning off the car.

"I'm gonna make dinner. Come inside in an hour."

Dean stomps towards Bobby's house, leaving you sat against the sleek black impala. You turn it back on as soon as he's away, hearing the problem immediately. You grew up working on cars with your dad and brother before the hunting life claimed you violently, and everything was still ingrained in your mind. You fix the carburetor, ending up greasy and dirty as you walk back into Bobby's house after dark for dinner.

"Told you to be in an hour ago-"

Dean pauses, frowning instantly.

"That's grease. Did you touch my baby?"

He groans, his eyes turning stormy as he bolts out of his seat and into the yard in half a second, you trailing behind.

"I fixed it! I swear."

You whine as he shoots a glare at you, shoving his keys into the ignition and-

"How the hell did you-"

Dean murmurs, in awe.

"I used to listen for changes in revs all day. Engines talk if you pay attention."

You shrug, wiping grease on your pants. Dean clenches his jaw, staring at you.

"Marry me."