Dean called you to come over because they needed help on a case and while they were waiting for you, Sam was dreaming about you, supposedly

Dean: “Sam, wake up!”

Sam: woke up, a bit disoriented

Dean: “You were making some pretty happy noises in your sleep there. Who were you dreaming about?”

Sam: “W-what? No! No one!”

Dean: smirked a bit “Well, anyway, I called {{user}}.”

Sam: blushed a bit “You did? What did they, uh, say?”

Dean: “They’re coming over to help us with the case.”