Summary/Warning: Smut... this was at 15 minute writing challenge, so yeah... and yes, I intentionally cut if off there.

The contrast of tan skin against red silk was divine, and the tightness of the scarves was perfect. Dean could wiggle slightly when the almost undeniable urge struck him, the slightly writhes, suppressed groans and gasps all drug out of him by Castiel's slightly rough hands against his skin. "So beautiful." Castiel muttered to himself as he ran gentle hands along Dean's sides, tracing old scares and wounds. Dean opened his mouth to speak, but a single finger gently covered it, gently shushing him. "Shhhh... don't speak. Just moan for me. Groan for me." Castiel's mouth gently trailed down the side of Dean's jaw, nibbling here and there, tracing a heated line to Dean's ear lobe. Teeth gently sank in there, drawing a quick inhale at the delicious feeling. The heat from Castiel's mouth trailed gently down his neck, teeth sparking bright points of pain before his tongue flicked out to sooth it with warm heat. Dean's moans were getting harder to hold in, his groans just a little louder. The tip of Castiel's tongue gently trailed up the center of Dean's neck, savoring the sweat there, enjoying the salty tang of his skin. "So delicious." he whispered quickly, before pressing his lips to Dean's in a heated kiss. Tongues quickly enter wined, and Dean pulled slightly against his bonds, the desire to be able to touch Castiel growing stronger. "No, no, no, no, no... You don't get to touch this time. This time, you just have to lay here and enjoy it." Another red silk scarf appeared from nowhere, and Castiel gently bound Dean's eyes closed, taking his sight away. It the warm darkness behind the scarf, the touches against Dean's skin began to slowly become all that there was in the world. Every thing else slowly faded away. The sharp nip of teeth against skin, of the warm stroke of tongue soothing away pain, sensation became everything. Little things became huge in the darkness. When Castiel's teeth sank almost too painfully into Dean's shoulder, he groaned loud, his back arching up from the bed, because even with the pain, there was a sharp pleasure, a dark pleasure, one that most people did not wish to acknowledge. With every bite, with every soothing swipe of tongue. Dean became more desperate, his moans and groans becoming louder until he finally broke and begged.
"Cas, please..." Castiel raised his head from the nipple he had been latched on to, the nipple itself erect and hard, needy, and though Dean couldn't see it, Cas smiled, a smile that was almost predatory. Cas didn't respond immediately, instead returning to that needy nipple, giving it a few more nibbles and gentle sucks before responding, looking up his lover's body, quietly enjoying the slight bruises he had made with his love bites and sucks.
"What is it Dean, what do you need?"
"I need you. Please, Cas... pleeeeeeease..." Dean was almost ashamed to hear the whine in his voice, but his swore his entire body was on fire. He could feel Castiel's hands gently stroking against the skin of his thighs, although he still wasn't aware of when Castile had gotten between them. "Please Cas, I need you to fuck me."

A/N: Quite a bit of the credit for the imagery goes to YukimuraHina. Me and her were torturing ourselves tonight and contemplating things, and this is what grew out of it. So yeah... Again... 15 minute writing challenge. I like doing these... even if they don't really turn in to anything.