A case comes up at a councelling retreat and Sam, Dean and Cas go to check it out. Sam snatches up the only job vacancy forcing Cas and Dean to go in as a couple.
Their time there results in some things that non expected.
Winchester guide to not being gay: Say buddy repeatedly. Especielly after extremly gay moments
Dean: *kisses a dude(cas)*
Dean: *one minute later*
Dean: Hey there buddy chum pal friend chum home slice bread slice