Dean Winchester.

Dean had always struggled with his sexuality. He liked women, but he also found himself being attracted to men. This only escalated with the introduction of a certain clueless angel of the Lord named Castiel.

The minute Castiel had appeared in that barn only a month ago, with his rumpled suit, trenchcoat, and those stunning blue eyes, Dean was absolutely blown away. But his sudden feelings freaked him out, and he was too scared to say or show anything. So Dean closeted his bisexuality.

Sam suspected something was up, but he knew better than to prod his touchy older brother when it came to feelings.

One day, Dean was by himself, researching in the bunker library when Castiel suddenly appeared, scaring the shit out of him.

"Cas! what the hell, man... how many times do I have to tell you?!"