vcmpirecas:

So Cas doesn’t actually know about his pain kink until he starts dating Dean, when one night he’s on his knees sucking him off and Dean smacks his cheek lightly. He immediately pulls Cas up and apologizes, but Cas says with a blush that he liked it. He’s a little scared because he thinks it’s fucked up, that he liked being hurt, but Dean assures him it’s totally ok.

They explore pain slowly. They start with daily spankings, where Dean will approach Cas around the house and pull down his pants or flip up his skirt, and deliver ten hard, fast slaps to his ass or thighs. It works Cas up so much that most nights he’ll approach Dean before bed and settle over his lap for a longer, more intensive session. 

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