What if Dean invites Mr. C over for dinner and his son Ben is just SO EXCITED THAT HE'S THERE is like BOUNCING UP AND DOWN and has SO MANY QUESTIONS and practically steals the entire conversation and when he gets tired out Dean takes him up to his bed and goes back to find Cas doing dishes, sleeves rolled up, and Dean makes Cas put them down so they can go cuddle (read: make out like teenagers) on the couch
Dean would keep trying to steer the conversation back towards getting to know Cas, but Ben would be telling Mr. C all about the pet fish he has, then asking if Mr. C has any pets, and then not even waiting for a reply before rattling off all the things he knew about fish he learned from watching the Discovery Channel with Uncle Sammy.
ahhhhh but the best part would be that instead of Dean feeling like it makes the dinner awkward, he see how good Cas is with his son, smiling at him during his stories encouraging him to do a show-and-tell about the geode his Aunt Jess gave him.
alkfdal;ksfjdal;s they would totally makeout on the couch, with the volume down low on some action movie. Cas would pushe Dean against the arm of the couch and rub his thumb up and down Dean's neck while they trade warm, happy kisses and let's their hands and mouths explore each other until they're both just staring at each other with their foreheads touching and noses rubbing because they're both huge, giANT, SAPPY DORKS