Your gateway to endless inspiration
Genuinely believe they'd start barking if someone got too flirty or touchy with their cat-coded boyfriends <3 Then just smile and nuzzle them close like nothing ever happened, meanwhile Sam and Cas are like "TF was that???"
If the fandom agreed with me on the idea that it does not matter what they look like they'd act like in a relationship, Dean & Gabriel would follow their boyfriends Castiel & Sam like dogs and absolutely would follow them any time they leave a room no matter why. Gabriel would even whine if Sam was going to the bathroom and didn't let him in. Dean would hover if Castiel made food and practically beg for some. Like he'd start doing tricks.
Can the world agree with me I think this'd be a nice little tidbit