Imagine you and Dean acting as a couple for a hunt and Sam becoming jealous.
“So what…you like him better or something?” Sam spat. What would be the difference if you acted to be a couple with him? How would that screw up the hunt?
“Sam, quit being ridiculous,” you laughed. “Of course not.” Now it was Dean’s turn to looked offended. “I like you both equally.”
“Then why are you so against me being your partner?”
“I’m not! This was Dean’s idea! Chew him out! Not me!” You knew that was a lie. Well, half of it was anyways. You didn’t want to act like you were with Sam because it would be nothing but torture to you. Acting out your dream and knowing it wouldn’t last but for one night would kill you. Besides, he would be too much of a distraction.
“Oh, trust me, he already has,” Dean scoffed. He opened his mouth as if he was about to add on to his sentence, but he closed it just as quick. “It’s really not that big of a deal, Y/n. We can tweak the plan if it’s bothering Sam that much.” The look of amusement on the eldest Winchester’s face only made red sneak onto your cheeks.
“Let’s just keep it the way it is.”
Sam’s jaw hit the floor. He had had enough. Almost knocking the chair over as he stood up, he pointed his finger in yours and Dean’s direction. “Fine! But you better not kiss!”