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Sam was tired, he'd been tired for as long as he could remember. Sometimes he wondered if he was born tired but this time it came from Castiel's absence, he'd grown almost used to Cas being in the bunker for the majority of his time and now he's finding that his absence feels unnatural.
He knows that the beatle needed for the spell was important but it had been two days and his absence was leaving an ache that he didn't like to think too hard on. Especially not when he knows the cause, his treacherous heart betraying him once again.
Just as he was about to give up on the book he was “reading” there was a clatter that seemed to be coming from the library, knowing that he was alone he stood, drawing his gun and cautiously approaching the library. To his shock and relief he doesn't find some unknown that managed to get into the bunker but instead Cas, hunched over.
“Cas! Cas, you good?”
He lets out a groan as he straightens.
“I'll heal.”
Sam moves closer in alarm, looking him over and finding a surprising lack of blood.
“Heal? Heal what, where are you hurt, Cas?”
Cas grimaces and attempts to wave him off.
“Nowhere of importance-”
“Then you won't mind telling me, will you?”
Sam stares intently, looking a darling mix of concern and stern. After a long moment of silence Cas folds like a loving father at Christmas with limited visitation. He let out a groan, hunching back over and now that Sam is closer he can see that he's holding his crotch.
“There was a young man with a rubber ball and a slingshot. I don't believe it was his intention to hit me in the testicals with it, he was quite apologetic, but it hit me at quite a high velocity. I knew that humans were quite protective of their genitalia because being attacked there could be quite painful but I didn't know it was quite this bad. Is there anything I can do to reduce the pain?”
Sam seems almost stunned for a moment before his brain catches up that Cas is in pain.
“Uh, yes, yes, ice is supposed to help. Do you want me to get you an ice pack?”
Cas wrinkles his nose.
“Does it have to be ice? That seems more painful.”
“Unfortunately it does,” he lets out a nervous laugh before continuing, “Jess massaged my balls and it helped me once but I doubt you'd want me to do that.”
Cas seems to brighten at that.
“You'd do that for me? That sounds perfect and has no ice involved”
He already starting to unbutton his trousers to pull them down when Sam calls out, heart hammering I'm his cheat.
“Wait, wait! Are you sure you want me to do this to you, Cas? This is pretty big.”
He nods.
“I'm sure, Sam”
He continues pulling down his trousers and then pulling down his briefs after them. Revealing his balls, practically purple and clearly swollen. Sam moves closer, like he's enchanted by them. Falling to his knees in reverence, looking up at Cas, hoping he feels as powerful as he looks in that moment.
Sam reaches forward, taking the bruised fruit in hand. Handling them gently as Cas’s breath hitches. Sam knows it's not what Cas agreed to but he can stop himself from mouthing them, loving the feeling of them on his tongue. Cas lets out a quiet moan, almost unnoticed by Sam but he does hear it and he redoubled his efforts. Mouthing, licking, sucking and fondling like a man in a desert latching onto his first water in months as Cas’s moans slowly grow louder. He pulls back just in time for Cas to come all over his face. Cas, looking down at him before clearing his throat.
“Yes, I feel much better. Thank you, Sam."