Prompt: it's dean's first time getting rimmed and he's nervous as hell, but cas' enthusiasm has him shaking in no time ;)
//pants shelby you’re gonna kill me.
Dean looks perfect like this.
Cas knows that Dean isn’t used to such blatant praise; knows that the tension in Dean’s back is from years of hardened repression. He can almost see the knots in the toned expanse of Dean’s broad shoulders… It doesn’t detract from the beauty of the flushed skin that is laid out before him, but it fills him with this irresistible urge to make those knots melt away.
“Done admiring the goods yet?” Dean gruffs, an angry mixture of nervous and impatient.
Cas takes a deep breath and spreads a warm hand over the space between Dean’s shoulders and massages the taut skin there until some of the tension dissipates. He really should know better by now. They’ve only been doing this for a few months, and it had taken the better part of those months for Dean to finally ask for what he wanted. Cas had always known, deep down, what Dean wanted; but Cas also knew that it had to be on Dean’s terms. They’d been sitting on the couch, watching Dr. Sexy reruns, their legs tangled together lazily, when Dean finally brought it up. It had been such a casual remark, but Dean looked so comfortable when he said it. So Cas had followed Dean to their bedroom and opened him up so slowly, so carefully, until Dean was writhing and panting on his fingers. Dean had been so beautiful beneath him; so tight around him… so relaxed after he’d come…
Cas needs so desperately to see it again.
“Dean…” He murmurs, lowering his lips to kiss the curve of Dean’s spine as he massages both hands into his shoulder blades.
Dean sighs and Cas feels him relax under his lips. He smiles into Dean’s skin and begins to tongue at each knob of his spine, laying firm kisses down as he slowly makes his way down Dean’s flushed back. He follows the motions of his tongue with his fingers, kneading at the smooth skin and muscle… so strong, so beautiful. He whispers those words into Dean’s skin, relieved when it results in a warm sigh instead of cold tension.
Cas lets his tongue trail to the base of Dean’s spine, causing a shiver to rock through the man beneath him. He nibbles at the flesh there, laves his tongue over the redness and purses his lips and sucks. Dean bucks beneath him.
His voice is strained and Cas thinks he sounds beautiful. He moans softly into Dean’s skin.
“Tell me to stop and I will.” Cas murmurs.