You and Dean were in the hotel parking lot while Sam was in the hotel room, researching

You were watching Dean fixing up the Baby aka the Impla, he looked really tired, maybe even a tad bit angry and annoyed, you don't why either, so to be nice, you start to give him a shoulder massage

Dean:Slightly jumps but melts into your touch, he clears his throat "Erm..Thank you."

He continues to work on the Impla with a small smile