A/N: Movie time-frame, set pre-Tris. Anon prompt requested a smutty Four one-shot. I'm working on a new style (shorter, less narration-heavy) so this reads a little awkwardly to me. Sorry about that! You can find me on tumblr at ParadigmFlaws. I'm generally always accepting fic requests or prompts.

She reached out, her hands grasping his forearms. The hold was anchored with nails, her hips rolling desperately against his. A high pitched whimper caught in the back of her throat as Four remained unrelenting. Not even her heels, now pressing firmly into his ass, had convinced him to thrust faster. Alcohol and desire fanned her arousal, her muscles clamping tightly around his cock.

Feeling it, Four's slow rhythm drew to a halt, his hips pressed flush against hers. She scored her nails down his muscled forearms. "Damn you, Four! Don't you dare-!"

He did. Rolling against her only slightly to increase the pressure, he put a knee into his mattress to bring himself higher over her. She shuddered at the changing pressure, clenching around him again.

"Four!"

Finally, he moved. Pulling back so far that the head of his cock almost slipped out of her, she keened and bucked wildly at the perceived threat of a withdrawal. It was an unnecessary concern. Four pushed back into her, more strongly this time, withdrew - repeated the action. It was enough to drive her arousal higher, keening noises slipping out between her lips. In desperation, she took one hand from his forearm, shoving it down to where they were joined, and stroked her clit.

She trembled, muscles tensing throughout her entire body. The tightness that coiled within her belly finally released as she came, her orgasm coming in waves that had her clenching around him with an agonizing tightness. Four couldn't take the additional sensation. He shuddered over her as his orgasm hit, his forearms dropping to the mattress beside her head to prevent from crushing her underneath him.

The aftermath of arousal was a comforting sensation, lethargy creeping over them both. Edged with alcohol, it was enough for her drop back to his mattress, supine, as her eyes fluttered shut. Only marginally more sober, Four shoved himself over with his arms, falling onto his back beside her.