Disclaimer: They belong to someone else. I just like to speculate.

Rating: R

Pairing: Mark and Lexie

Time line: Begins after "All By Myself"

The Demise Of The Dirty Mistresses Club

By Lattelady

Ch 1 – Unlocking Doors

When Mark Sloan opened his door and saw Lexie standing in the hall, all hope that his feelings were simply hunger for a new and different woman shattered. It took him about two seconds after that to realize that he liked her, really liked her and had for a while. He finally understood why he'd listened, when Derek warned him to stay away from Little Grey.

Before he could convince her to leave, she'd pushed past him and her coat and purse hit the floor, followed by her boots and sweater. His breath caught in his chest at how beautiful she looked. Common sense told him to leave his door open, but something deep and primal moved though his gut at the thought of a casual patron of the Archfield walking through the halls, and catching a glimpse of her silky skin.

When her tank top slid silently to join her growing pile of clothes, he gripped tightly to the small reserve of self-restraint he still possessed. He almost had his inner demons beaten until he made the mistake of looking her directly in the eyes. They were deep pools of doubt, confusion and trust. No woman ever looked at him with trust. It kicked him in the chest and shredded his control.

He didn't remember crossing the short distance between them, or sliding his hands over her cheeks and into her hair, but he knew he'd never forget the taste of her mouth on his or the feel of her arms around his neck.

He knew it was wrong and for the first time in his adult life, that thought hurt.

Then there was no time for right or wrong, there was only them, desperate, hot and hungry. Bodies pressed, lips explored, and hands tugged at clothes until his shirt and her bra were left somewhere between the living area and the bedroom.

"Aw, hell," Mark muttered. Impatient to have her naked length stretched out beneath his, he picked her up and carried her the rest of the way to the bed. Once there, he clawed at the covers before he lay her down. Deep yearning gnawed at him as he stood looking at her half naked body. "Last chance, Little Grey," the words rumbled out of him between ragged breaths.

If she fled, he hoped to hell she did it quickly, because he was at the end of his restraint.

"Teach me," she whispered. Sitting and tucking her legs half under her, she reached for his slacks and planted hungry kisses along the flat planes of his stomach.

"Lexie," Mark growled. Something broke deep inside of him as her lips moved against his skin and her small hands tugged at his zipper. He gripped her under the arms and tossed her further onto the bed. Seconds later he had stripped away her jeans and panties followed by his pants and boxers.

Something savage ripped through him as his body covered hers. He needed to taste and touch her everywhere. Teeth nipped, beard scratched and fingers explored as he held her tightly beneath him.

Lexie threw her head back and arched her back, opening herself up to him completely. His name dropped from her lips in little mewing moans as his flesh assaulted hers.

Mark froze and he looked down at the woman pinned under him. Her face was flushed and her eyes were squeezed closed as she bit her lower lip. His head fell to her shoulder and he wrapped his arms around her as if she were made of glass. "I'm sorry, I'm sorry…"

It took her a moment to orient herself. All Lexie knew was that the incredibly wonderful things she'd been feeling had stopped. "What…what are you sorry for?" her voice cracked as she tried to keep tears at bay. Her only though was that he was regretting being here with her. "Tell me, Mark, please, what are you sorry about?" She made herself cup his face and his eyes meet hers, needing an honest answer no matter how much it hurt.

For one second he was tempted to lie to her, to make her think he wanted out, but the thought was too painful to contemplate. When he saw the same pain reflected back in her eyes, he broke. "I'm sorry I was rough." His voice caught on the words.

"But…" She was confused; there was nothing rough about his touch.

"No, Little Lexie, not like that, not with you."

Mark Sloan didn't apologize or have regrets in bed, not before, not during, and not after.

"Shhh," she sighed and ran her thumbs through his beard. "You weren't…you aren't…" At a loss for words she gave up and kissed him while rocking her hips against his to show how much she needed him.

Her mouth against his was his undoing, but this time he took it slowly, this time he forced himself to be gentle, as he got down to the business of learning Lexie Grey.

Tears filled her eyes each time she climaxed and sobs accompanied their final mind blowing orgasm. Mark was used to that reaction, he was a skilled lover who had perfected the art of giving a woman physical pleasure. His psychiatrist had told him it was because he didn't believe he had anything else to give. Up until now Mark had thought that was a load of crap. He'd told himself he simply enjoyed hot, sweaty, sex, now he was terrified it was true.

.Then Lexie changed the rules.

"Your turn," she purred, gripping his shoulders and pressing him into the bed.

"Don't you want me to hold you?" It was what he was used to, bed partners who needed to tie a pretty bow around physical release by cuddling as if it meant something, even when they both knew it didn't.

"Later…" she shrugged with tears glistening on her still damp cheeks. "First I want to learn your body like you did mine." As she spoke her fingers interlaced with his and she pressed his hands into the pillow above his head.

"Ya think you've got me trapped?" He smirked. She may believe she was running the show, but Mark Sloan was a man who was always in control especially in bed. Let her play her game for a while, he knew that he could have her flat on her back with his body covering hers in under three seconds, if he chose.

"It's a trap of your own making," she whispered as she explored his body as thoroughly as he had hers.

"Lexie…" he sighed as her hair slid over his skin following the trail left by her soft lips and tiny teeth.

To her joy, she discovered Mark Sloan had a ticklish spot behind his right knee and a very sensitive one on his left hip. She rolled her tongue over hard man nipples and felt him buck beneath her in response. Nipping at his navel made him gasp her name. When she moved lower, his hands dug into the sheets turning his fingers white with the effort to remain in control.

"Let go, Mark." She stopped her ministrations to watch the struggle that was passing over his features. Lexie didn't understand what was causing it; he appeared to be battling for his life. He'd enjoyed himself thoroughly while giving her hours of pleasure, before finally succumbing to his own needs in a wild ride that had taken her with him one more time. Why wouldn't he take the joy she was offering him?

"I can't!" He growled. "Damnit, not like this." In one quick movement he grabbed her arms and pulled her up and over until she was flat on her back with his body covering hers. He couldn't catch his breath as he spread her thighs and entered her hard and fast. His mouth covering hers, his tongue scraping her cheeks and teeth to taste all of her, feel all of her surrounding as much of him as he could.

In a move calculated to give him back the ground he felt he'd lost, he arched and pulled back to look her in the eyes, while carefully placing his right hand on her abdomen directly above her pubic bone. Mark didn't usually want much skin-to-skin contact with a woman when he did this little maneuver, but tonight he couldn't make himself move his left arm, which was wrapped tightly around Lexie's shoulder. As much as he needed to get his balance back, he couldn't let her go. He was reminded of how small and fragile she was when the edge of his palm brushed against one of her hips and his fingers wrapped around the other. It was that reminder that kept his touch light.

The fingers of her right hand dug into his left shoulder urging him on. "Let go," she urged. They both knew she wasn't talking about the way he was holding her.

He shook his head and kissed her gently as he brought back his hips.

"You can," she whispered and pressed her free hand tightly against his much larger one, covering her abdomen, just as he thrust forward filling her completely. The weight of their joined palms caused sensations to echo through her body. She could feel him everywhere. It was the most intense intimate joining she'd ever experienced and caused deep inner contractions to spread through her as she cried out his name.

Mark was caught completely off guard, when he tumbled over the edge seconds behind Lexie. He usually timed his pleasure exactly. Years of discipline were shot to hell in a whirlwind that broke through his protective amour and left his head swimming. His arms collapsed and his mind disconnected from his body. He was naked and vulnerable and unable to remember any patented, crass Mark Sloan remark to offset the situation. Instead he simply held on tightly to the trembling woman in his arms.

Long after Little Grey fell asleep wrapped tightly in his embrace, he lay awake listening to her breathe, trying to tell himself that nothing was different and she was just another women in a long line of bed partners.

He might have believed it, if it weren't for a deep ache in his chest and dampness that filled his eyes.

Lexie woke up to the sound of Mark's alarm in one ear and his heartbeat in the other. "What time is it?" she mumbled against his chest. She had a vague recollection of him pulling her into his arms and kissing her forehead, after that last intense bout of…of…of…she wasn't sure what to call it. Sex seemed far too tame a word and making love far too optimistic.

"It's almost 5," he grunted. He'd awakened beside hundreds of woman in his time, though almost never holding them. He'd learned early that sleeping on his own side of the bed made morning partings easier…much less tearstained and emotional if he wasn't lucky enough to slip out before they woke.

"Damn! I've got pre-rounds in half an hour." Lexie rubbed her nose against his rough beard and snuggled tighter against him. "I so don't want to move. This is the first time since I've returned to Seattle that I've been really warm in the morning...or any other time of day, for that matter."

"Glad I could be of service." His head tipped at an angle and he laughed, breaking any morning-after tension that had existed.

They were fine as they dressed hurriedly, she in her clothes from the night before and he to go jogging on the bike path behind Seattle Grace.

…..They were fine as they quickly gulped coffee he'd made with the small coffee maker the hotel provided, and she washed her face and tried to neaten her hair.

….They were fine as they hurried through the early morning hallways of the Archfield, he with his gym bag in one hand and a hanger full of clothes for the day in the other.

….They were fine when he pulled into his parking space at the hospital. Mark had insisted on giving her a ride, reasoning that he was going there anyway. He studiously refused to listen to his inner voice that worried about her safety in the dark of the wet cold morning.

"Lex," his voice was deep and quiet as she reached for the door handle. She turned to look at him unaware that her face showed all the doubts and worry she was feeling. Her expression stopped him in his tracks and he couldn't utter his usual 'been fun, see ya around'. Instead he reached for her face with both hands and kissed her.

She returned the kiss with her fingers wrapped around his wrists. When they pulled apart, all they could do was look at each other, both uncertain, both filled with doubts, and neither wanting the moment to end. "I wasn't expecting that," she breathed.

"I wasn't expecting any of it."

"I…well yes…I was rather forward…but I don't regret it." She added quickly and scrambled from the car, before he could say anything to ruin her good mood.

"We're so screwed, Little Grey," Mark muttered as he watched to be sure she made it across the parking lot and into the ER doors safely. "We're so damn screwed."