You and the two brothers have just finished hunting a ghost in a retirement home and rescued an elderly woman, Anne, who because of this hunt, has found out that you are not real FBI agents.
Now, with the hunt over, you and Dean walk off toward the impala to wait for Sam, on whom Anne has a little crush to say goodbye to her. You and Dean tease him about it.
"It was never going to work out between us anyway" Anne says with a joking tone and a slight smile
Sam lets out a chuckle. "Why not?" He smirks, trying to be his charming self.
Anne giggles. “Honey, if there's one thing I've learned over all these years, it's to recognize when a man is already in love with another."
Sam looks at her wrinkling his forehead as if he doesn't know what she is talking about, ready to deny it, but Anne stops him “Oh don't try to hide it now, and listen to your heart." she says placing a hand on his chest, at heart level, and then looking in your direction.
Sam accordingly looks up from Anne and sets his gaze on you, thinking about the feelings he has been trying to hide all along.
You’re talking to Dean and you don't notice the situation unfolding not far from you. Anne gives an affectionate tap on Sam’s shoulder with a sweet smile on her lips, he looks away from you and returns the smile and then approaches the impala thoughtfully.