Random Sammy drabble:
Sam fixes things. It's always been his position in the family. Dean sails in half-cocked and Sam picks up the pieces. He saves everyone he can, but especially Dean. That's who he is, and he doesn't know any other way to be.
Sometimes, though, the weight gets to be too much. Then he turns to you. He knows that when he comes in, shoulders drooping, you'll pat the side of your bed and pull back the covers for him to lay down next to you. You'll turn on some inane movie, maybe it's a chick flick, maybe it's a B-rated horror film. It doesn't matter because he won't watch it.
Instead, he'll lay his head on your chest and curl around you as much as he can without crushing you under his weight; and you'll run your fingers through his hair. You'll rub his back, and draw senseless patterns over the back of his neck. This will continue until he eventually nuzzles his face as close to your skin as he can, and then he falls asleep. You continue to play with his hair until the movie ends; and then you'll turn on your side. You wrap around each other like a pile of puppies; and you fall asleep like that.
When you wake up in the morning, you'll have a stiff neck, and Sam will complain about his shoulder; but when he gets out of bed to make breakfast, he's standing at his full height again, moving with purpose.
Sometimes, Sam just needs to be protected, to let the weight of the world rest anywhere else for a night; and then he picks it back up, and carries on until the next night he comes to you looking like a kicked puppy and the cycle begins anew.