Just something really short... i got this idea from an episode where it occurred to me that Olivia might like it rough... Dunno totally random
Rough
He'd never expected Olivia Benson to have a kinky side. He supposed he should have, she'd always been tough, she'd always seen a lot of violence, he guessed she enjoyed it rough... Sometimes.
Their first time had been frenzied; clumsy and awkward. They'd been drunk, she'd just found out his wife had left, it had been a tough case. She supposed none of that was an excuse but they'd done it anyway. He'd been gentle, Kathy hated it when he got rough.
The second time they were together they'd made love, he'd lit candles and cooked her dinner and then he'd made love to her. That night he had worshipped Olivia Benson when they'd woken the next morning they'd been together and he'd pulled her close, she hadn't felt that loved for a long time.
The third time she'd surprised him "You don't have to be gentle El" She'd whispered huskily as he'd eased himself into her. He was too surprised to do anything, just kept pumping into her tight body, with a little more force than before.
The fourth time she'd assured him he wouldn't hurt her. He'd nodded he knew women were resilient but the thought of being rough with one, especially someone he cared about was difficult to grasp. She'd sensed his apprehension and assured him that she'd stop him if he went too far. He knew it was true, Liv was smart and strong, she would never let a man hurt her.
The fifth time they'd talked seriously "You know I've never trusted anyone to be rough with me, you're the first man I've known would never hurt me", he hadn't known how to respond seeing a rare vulnerability in her eyes.
There had never been a sixth time, except in his fantasies. He'd gone back to his wife, thrusting roughly into her body, she begged him to be gentle and he missed the feel of Olivia's toned and trusting body under his as she begged him to be harder and rougher.
Things were different between them all after that. Him and Kathy, him and Olivia and Olivia and Kathy. He couldn't pretend he hadn't felt something with Olivia, perhaps more than he'd ever felt for his wife. Olivia felt betrayed. Kathy suspected he'd been with another woman, perhaps she even suspected it was Olivia. Olivia spent less time at the Stabler's after their reconciliation, she spent more time alone, she wished she could regret sleeping with Elliott but she knew she couldn't deny her feelings. She loved that man, if she couldn't have him she wouldn't have anyone else either.