Imagine: Castiel eavesdropping on you and Sam talking .

You were talking to Sam, your best friend, about Dean being a jerk, and your crush, Castiel. "He has no right to keep embarrassing me in front of Cas!" you rant about Dean, not knowing Cas was listening the whole time. "He is such an ass!" you yell.

"Maybe he just teases you about your crush on Cas, because he wants the two of you to get together," Sam replies. Cas was shocked at this, because it was the first time he ever realized you had feelings for him.

You let out a sigh and state, "Dean is still an ass." Castiel nods his head a little to himself as he can't help but agree a little bit, at least for this situation.