Ah yes, it's years later for me, and I still have a soft spot for Sam reaching out to Cas like this.

[Not really going to go into Dean's self-righteousness, especially considering you say you started out as a Dean!girl, because I really don't have a lot of good things to say about Dean these days, to be perfectly honest.]

But yes, Cas tends to steal people's attention, doesn't he? He is just such a fantastic character.