It starts a week after Dean gets out of Hell and is back up topside. They bunk down in a motel with limited room's free due to a wedding party that has set up camp there and thus the only room they have available to the Winchester brothers is one with a double bed in it. Dean looks at Sam, shrugs and says that they'll take it although he feels the need to assert the fact that the two of them are brothers, not the lovers that motel receptionists have mistaken them for in the past.
It's Sam who suggests that they share the bed rather than have one of them sleeping on the floor. Dean, who has been driving for the past eight hours, gives his consent by flopping straight into the bed and promptly conking out completely.
It's one of Dean's nightmares of Hell that jolts him violently awake to discover what exactly has happened during his four-hour nap. His oversized moose of a brother is not just sharing the bed with him, oh no, he's got both of his muscular arms wrapped impossibly tightly around his big brother's waist and is showing no sign of letting go. Dean sleepily smiles at his big little brother, feels oddly safe in Sammy's arms, and then falls straight into a blessedly dreamless sleep.
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The next motel they stop at has plenty of rooms to offer and so they are back to being in two separate twin beds once again. They eat, wash and go to sleep all in the space of an hour and thirty-three minutes.
Dean wakes again, this time due to a feeling of intrusion, and blinks his heavy eyes open to realise that Sammy has crawled into his bed and is still snoring soundly. He thinks that it may have been a subconscious act on his little brother's part, kind of like sleep-walking, but there is no way on this Earth that Sammy could be gripping onto Dean that tightly without being aware of it.
The older brother considers waking the younger, to ask him what this sudden reversion is all about, but then decides not to. He hasn't seen Sam looking this peaceful since the kid's Stanford days and, well, Dean can't deny the fact that this feels good; being needed and actually doing something good, even if the only impact it causes is to the very localised issue of Sam's brooding nature. So Dean hugs his baby brother back and lets his exhaustion claim him.
When Dean wakes up, Sam is already in the shower and neither man mentions the night before.
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A vicious argument causes a rift between the brothers the next motel over and Dean has a feeling that he somehow won't be squashed into sharing a bed with Sammy later that night.
He is very much right on that account. He is still awoken though, only this time it is by a soft, keening, wailing sort of sound. A soft, keening, wailing sort of sound coming from his little brother's bed. All feuds forgotten, he bounds from his own bed and starts shaking Sammy on the shoulder.
"D-dean... No... Come back... Don't leave... Not again... Need you..."
That settles it for Dean and he is soon climbing into his little brother's bed, wrapping his arms around the taller man's waist like Sam has been doing to him for the few nights previous. And thus, Sam's soft, keening, wailing sort of sound comes to a stop as his arms cling magnetically to his big brother.
It might seem childish or maybe even stupid, but if this is what it takes to make Sammy happy, then Dean is more than willing to do it. Hell, it even makes him feel better too.
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A/N:
Just a short little drabble of a thing that I've just worked on during a college study-period. I apologise profusely for any errors. Thank you very much for reading it, I hope you liked it and please let me know what you think! :D