But doesn't Dean give the Blade to Cas because it is safer with him than it is with the ever double-crossing evil Crowley? Just the difference between good and trustworthy vs evil and devious - nothing to do with love or relationships?
Well, given that Crowley had it in the first place and brought it to Dean at the right moment, Crowley had proven himself don’t you think?
I mean yeah if you want to take all the subtext out of the show and just see the top level in which it’s about 2 brothers fighting monsters and that is literally it then yeah it would make sense for them to hang onto it and put it in a safe or throw it back into the ocean or something, same as it would make sense for Sam to get his anti possession tattoo back, for Mary to just use her words and talk to the boys rather than sublimate everything and make things worse, for Charlie to never have left the safety of Cas’ care just to get a break from Rowena and for Dean to just drop the facade already. But these things are part of the story for a REASON. Because you can’t accept some subtext or decisions and not others and this whole show is built on the subtext and the character stories.
The fact that Crowley and Cas are giant mirrors and metaphors and everything Dean does in relation to them is telling to something going on within himself is really important for the whole show, it’s not just romantic, it’s Dean CHOOSING the LIGHT over the DARKNESS, fighting not to fall into the power of the mark, which is what he was talking about literally just before going in to face Cain.
Only in 10x09 Dean asked Cas…
To take him out, because he doesn’t want to go darkside, he wants to stay in the “light”.
Just before he gives Cas the blade Cain parallels Crowley to Abbadon (his darkness) and Cas to Colette (his light).
So yeah, I think you can’t pick and choose the story and the subtext in the show. I mean we can, but it would be stupid and we would miss out so much of what makes it so obsessively brilliant.