During the rising of the witnesses in 4×02, Henrikson comes back, and Dean calls him Victor twice in one short conversation. He seems genuinely pained at the fact that Victor died, and it seems more than a little shippy. Dunno if anyone else ever noticed this, but it only cements my idea that Dean is bi.

I just hadn’t realized that the subtext for it went all the way back to Season 4. Or least as far as early Season 4.