Dean, Sam, Cas, Bobby, Ellen and Jo are spending Christmas together. Cas doesn't realize what mistletoe is and thinks it's just a pretty decoration and puts it everywhere. He's been dating Sam, and the two of them have been working on setting Ellen and Bobby up, along with Dean and Jo. Cas sees Jo and Dean kissing under the mistletoe and asks Sam why they were, earning a chuckle before he explains. Bobby having shipped Chestervelle laughs and says its a Christmas miracle those idjits kissed.
Matchmaker Sam and Cas is my new favorite thing ever holy shit.