Adding onto these lovely points with a few extras:
- Dean making reference to him and Cas being Thelma and Louise sailing off this cliff together (who are lesbians and do so while kissing).
- Dean knows two things: Bert and Ernie are gay, and Cas is not going to die a virgin.
- Dean telling the fanfiction play actors for himself and Sam to “take a sub step back there ladies” while not making any corrections regarding the S-E-X or nature of Destiel in Act II.
- Sam teasing Dean by making up ship names for Cas and himself instead (but doesn’t act the least bit surprised by the scenario), to which Dean tells him to “do that thing where you just shut the hell up, forever.”
- Male Villain: “Get on your knees” Dean: “Well, I’m flattered really”.
- Beaten bloody, on his knees, unwilling to fight back, “I need you.”
- Performing the Hunter’s Funeral for Cas by himself.
- “Nice peach fuzz” *playful face tap*.
- Lucifer disguising himself as Cas while trying to trick Dean; Lucifer only ever appears as the target’s lover in previous examples.
- Dean making a Led Zepp mixtape for Cas to parallel the exact same way his parents fell in love.
- “Don’t ever change.” *gives him the fondest look in existence*.
- Cas being unable to locate them via angelic powers due to rib carvings; Cas also being able to locate Dean after Purgatory due to feeling a person’s longing.
- “Y’know what, blow me Cas.” “Cas, not for nothing, but the last person who looked at me like that—I got laid” *winks*. “Cas, get out of my ass!” “I was never in your….” *confused looks x2*.
- Dean being suicidal after Cas’ death, then suddenly hopeful again once Cas is revived; “I said I needed a big win; we got Cas back. That’s a pretty damn big win.”
- Rowena doing couples’ counseling between him and Cas. “What am I picking up from you two? A wee tiff?” “Boys? Fix it. I don’t have many regrets, but the few I do still haunt me…Then one day you die…and you can’t make it right. So fix it!”
- Naomi’s office changing to the bi flag colors only while Dean is begging for Cas to break out of her mind control.
- Mary asks how long she was gone, Dean replies “33 Years.” Cas asks how long he was gone, Dean replies “Too damn long.” It was about two weeks-
- Cas getting the Colt from under Dean’s pillow-
- Dean’s fetishes being doctors and cowboys- then Cas dressing as both throughout the show-
- Dean’s reaction to Cas dressing up as a doctor being a husky voiced “Doctor” in greeting, while making bedroom eyes at him- and yeah previous post already went over the cowboy one >.>