Eko was acutely aware that he was pushing her to the edge, his actions as carnal as her deepest desires. Her hands tightened around his neck, her nails digging into his skin, leaving an indelible mark of her. Simultaneously, her free hand scratched at his back, there would be marks left of where she had been. 
"Stop, I don't," she begged as she began to climb. "Ah no, no, no..."
Matthew ignored her plea, pushing her even harder toward her climax. Eko felt his teeth sink deeper into her collarbone, sending shockwaves of pleasure through her body.
"Matthew. Stop!" she cried out, her body trembling with desire. "n-not yet."
"Fuck," he murmured desperately, pushing her harder. "Come for me."
Eko spiraled at those words, caught endlessly and gloriously in the whirlwind of his assault against her. She climaxed shamelessly, her bones turning limp. "Oh god," she whimpered. "Dammit, Jesus... god," she was breathless, overwhelmed by what he had done to her.
Her shoulders pressed back as she felt her pelvis clench around him, and he bit into her neck once more. The full force of the man pushed back in, delving even deeper than before, as her hips arched up against him. He skillfully rotated his hips this time, creating a tantalizing rhythm, then pushed up again, a powerful and electrifying connection. Matthew was kissing her fervently, ravaging her mouth as their tongues entwined. 
"No, no, no..." she moaned deliriously, her legs shaking beneath her. It seemed impossible to sustain what she was feeling; she had already climaxed, and for some reason, it was building again, defying belief.
Eko's hands moved back into his hair and clung to him desperately. Her thighs shivered in delight as she surrendered herself to his rhythm, and slowly but surely, her body climbed even higher than before. Her mind spun from the intensity, and she fell hard and fast, screaming out in ecstasy.
"Christ!" Matthew gasped out as he pushed into her one last time, giving his all. Eko's fingers dug into his skin as she remained arched against him, breathless and completely consumed by the pleasure
As he descended from his own pleasure, Matthew looked down at Eko, utterly stunned by what had just taken place between them. Their eyes locked, and for a moment, the room was silent, except for their labored breaths.
Matthew breathed in deeply, his lips brushing against Eko's skin. Her legs contracted together as she shuddered from the aftershocks of their pleasure. "Next time, we're playing naughty stripper," she whispered, kissing him softly.
He mumbled something incoherent, and Eko could feel the tickling sensation of his lips against her collarbone. She giggled softly, feeling utterly content and happy in his arms.
 "How am I going to keep my hands off you now that you're living here?" Matthew begun, because it was like asking god himself at that point how he was going to keep this casual between them.
Eko laughed, her tone flirtatious as she drew him in. "Maybe you don't have to," she suggested, winking seductively.
Matthew's gaze intensified as he leaned in closer. "So you're saying I can give in to those sudden urges?"
Eko's smile widened. "As long as you remember that I'm not one of your fan club girls, ready to drop my pants at your command."
Matthew's expression turned playful. "I wouldn't expect any less from you."
"Besides, I'm too smart to be constantly seduced by you," Eko teased.
Matthew leaned in, kissing her cheek and making his way to her lips. "But you were the one who came to me to play the 'helpless sex rent role,'" he reminded her. "You know what happens when we're together." And he kissed her finally on the side of her mouth.