From EW’s fb stream with the writer of the Supernatural article

Samantha Highfill: I chatted with Mark and Misha on set… and then after the shoot, I got to go to dinner with Jared and Jensen. We ate steak- people keep asking me what they ate and I’m like “What do you think? We ate steak. It was delicious. It was amazing.”- and we talked about everything. My favorite part of it is that they know each other so well- it’s 12 years, they’re actually really good friends- that just watching them kind of make fun of each other and banter or Jared reaching across the table to steal steak sauce from Jensen… They’re brothers in so many ways and I just literally got to sit back and watch it happen and maybe occasionally ask a question about the show. They’re everything you want them to be.  

Fan: The season starts out with Dean and Cas and Mary hunting for Sam. What’s the dynamic between Dean’s mom and Dean’s best friend?
Jensen: Wait- I thought you said Cas was there.

Jensen said his least favorite death was the hellhounds in No Rest for the Wicked because his clothes were all rigged up to squirt fake blood. He said the fake blood on his face was sticky and uncomfortable and that when Sam cried over him at the end, it was like “angel baby tears” cleaning his face off. lol