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Cas tells Dean to hold his hand in the Impala when they find out the tape deck is broken. Dean is reluctant at first but Cas looks at him trustingly so he ends up taking his hand, keeping one hand on the wheel. When their hands touch, Whole Lotta Love starts playing in his head.
“I didn’t know you could do that,” Dean says quietly.
“There’s a lot of things you still don’t know about me, Dean.”
Dean puffs out a laugh. That’s probably true but he can’t help thinking that he knows Cas better than anyone. The fact that there’s still things he has yet to learn about Cas is both exciting and disheartening. No one knows Cas better than Dean.
“Stop thinking, Dean.”
Shit, can Cas hear him thinking?
“Yes,” Cas replies aloud. “I can feel your heart rate increasing too.”
“Shut up. Just play the music,” Dean grunts, tightening his grip on Cas’ hand.
I’m glad you’re back, Dean hears Cas’ voice in his head.
Glad to be back.