Sam and Dean were on a hunt again. Castiel was not with them because he was taking care of matters in heaven.

Dean and Cas had established themselves as a couple for a few weeks at this point. It was embarrassing for Dean to let go of his fears, but he eventually decided that Cas made him happy and that he refused to deny that.

Once they killed the target werewolf, Dean walked back to his car, hand in pocket.

He pulled out a small paper that read:

I love you. Stay safe. ~Cas

Dean smiled from the pleasant surprise.