Fics like Rapture.

"What's wrong?" Dean asks, his voice quiet, a soft smile tugging at his lips, as he drops his forehead against Castiel's. "Nothing's wrong, just need you for a while," Castiel sighs, and wraps his arms around his alpha's neck. Thick, long fingers travel up Castiel's stomach, under his shirt, grazing over his nipples, and he hisses at the touch, a stinging pain unfurling where Dean's finger touches him. Castiel is eleven weeks pregnant and misses the feel of his husband inside him.

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