(part 1) Dean likes being a mechanic. He doesn't have to take his work home with him. He can just sit back, switch on the TV and forget about replacing brakes or realigning wheels or taking dents out of body work. Cas, being a teacher, doesn't have it that easy. He has a whole heap of reports to write, as well as homework to grade. Not that he doesn't love his job, but it's hard going. That's why Dean makes sure that the coffee pot is on and he's already picked up the groceries so
This is so nice. It’s like a big warm hug of a fic.
(part 2) when Cas emerges from his grading papers and report writing, and collapses onto one of the chairs at their kitchen table, Dean can just slide a home-made burger in front of him, and a cool beer, and neither of them have to worry. Burgers make the world better, and even if they don’t give Cas back the couple of hours extra work he’s done, at least Dean’s angel looks more like himself than a zombie.
(part 3) He’s even better after a hot bath, maybe even a shower Dean can join him in, to kiss the tension away from his shoulders as the hot water rolls down them both. Dean knows it works, because when they crawl into bed, Cas sighs a happy little sigh when he settles against Dean, wrapped in his arms, and the cats settle at the foot of the bed (Dean learnt long ago that if he tried to shut them out, Castiel just let them in later). (part 4) Cas is up bright and early next morning, there’s swing music playing from the kitchen radio and Dean can smell fresh coffee. Dean manages to force himself out of bed and downstairs, and the smile Castiel gives him from the coffee table is beautiful.