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"Not quite, love." Merlin whispers, stroking Arthur’s cheek with his free hand.
Arthur nods leaning into Merlin’s touch; his eyes still clenched shut and damp with unshed tears. “I’ve got you, Arthur. Camelot’s safe. We’re safe.”
Arthur nods again, a tear slipping free.
Removing his long fingers Merlin positions himself, sliding into Arthur's body. Leaning down he presses a kiss to Arthur's collar.
Arthur's trembling, golden skin beaded with perspiration. His eyes are closed and his mouth open in pleasure, Adam's apple bobbing as he swallows compulsively trying to hold off.
"Shh, Arthur, let go." He murmurs. He allows the magic he’s kept under such authoritarian control since the battle to seep from his flesh and saturate Arthur, coating him inside and out and enveloping them both.
With a faint "uuhh..!" that's more breath than vocalization Arthur orgasms, pulsing around his cock and splattering between them. Merlin chases his own release in Arthur's lax body, thrusting as Arthur's cock twitches in his grip.
Chest still heaving with release he crawls up the bed, limp and sated. Covering Arthur with his body he rests on his elbows and peers into his king's red-rimmed eyes, kissing the tip of his nose.
Arthur huffs wetly, their breath mingling. Tracing a rough hand down Merlin's stubbled jawline, Arthur presses a kiss to his lips.
Nudging his shoulder Arthur obliges by turning onto his side, where Merlin curls around him, slotting his knees behind Arthur's and pressing his chest to Arthur's toned back. Threading his fingers into Arthur's sword calloused ones, Merlin gives him a gentle squeeze.
Arthur brings up their entwined fingers to his mouth and kisses the back of Merlin's pale hand.
"No matter what happens, Arthur, come hell or high water, I'll be right there beside you," he whispers into the golden fringe on the nape of Arthur's neck.