The person who posted it said they didn’t know if it was Sam and Dean or Jared and Jensen and as great as that would be if J2 hug each other randomly a lot on set, having a Sam and Dean hug in the finale (especially after finding out that Dean and Cas will hug) would make me so happy.

That’s why I also put the top picture on there. That one is clearly Jensen and Jared, just hanging out on set. The second picture doesn’t look like Jensen’s face when he hugs Jared. It looks like Dean’s face when he hugs Sam. Much more serious and world-weary. 

Here’s Jensen hugging Jared:

And here’s Dean hugging Sam:

That’s why I was guessing that this:

might be a brother hug. 

Although yeah, if J2 are randomly hugging on the set, I need to know about it for scientific research purposes.