Come on, you all knew that I wouldn't be able to resist writing about it and you have to admit it, this scenario is so much more realistic. :-) Let's have some smutty fun with them, shall we? If one of you isn't a smut fan, well ... you should walk away. ;-)

Chapter 1

"I need you, Lex." Mark's deep voice startled her and she dropped the papers on the table, turning around surprised.

"Hey, ah what?" Lexie tried to get a grip. Only the sight of him made her heart ache.

"I need you." Mark repeated and Lexie struggled to keep her face unmoved. "I'm doing a skin graft and I'm stuck with an intern who thinks that debriding a necrotic tissue is a title of a 'Nine Inch Nails' album."

"Are you sure it's not?" Lexie asked, her nerves being on high alert.

"It might be. I'm not familiar with their later work." Mark smirked and Lexie tried desperately to shake the feeling that he was flirting with her.

"You're just sad because Jackson is off to take his boards."

"He and I work well together. We understand each other." Mark replied, slightly surprised about what came out of his mouth next. "Like you and I used to, you know. So I need you."

Lexie took in a sharp breath, looking at him wide-eyed and suddenly something snapped inside of her. Enough was enough. "You know what? I need you, too."

Lexie stormed towards him, grabbing his coat and Mark almost stumbled into her when she yanked him forward with surprisingly great force. She'd taken him completely by surprise and he followed her through the floor without saying anything, still trying to wrap his head around her actions.

When she stopped in front of an on call room, he still had no clue what was wrong with her. Lexie opened the door and pointed with her finger inside.

"Get in there!" She demanded and when Mark didn't obey immediately, she gave him a shove, following him into the room and slammed the door shut behind her. Mark turned around slowly and looked at her quizzically.

"Lex, what's wrong?"

"Everything is wrong." Lexie huffed. "This is all your fault!"

"My fault? What are you talking about, Lex?"

"Stop calling me Lex!" Lexie shouted and Mark furrowed his brows in confusion.

"That's your name, isn't it?"

"Just stop it, Mark. This is torture!"

"I don't understand, Lex."

Lexie gritted her teeth, hissing out angrily, overpronouncing every single word. "STOP CALLING ME LEX!"

"Okay, but can you please explain to me why you are so upset that I'm calling you ... " Mark stopped when she threw him an angry glare, before her nick name could slip through his lips one more time. "... by your name?"

"You are freaking unbelievable! Do you know that? Standing nonchalantly against the wall oozing out sex pheromones and talking to me with this voice that gives me chills all over. And then you even have the nerve to tell me that you need me." Lexie exclaimed, her voice getting louder and louder with each word. "And not once, not twice, but three times! Are you freaking kidding me? You told me three times that you need me."

"I need you to help me out on my surgery." Mark said puzzled. "What else should I have said?"

"Do you even listen to yourself?" Lexie asked exasperatedly. "You can be glad that I didn't jump you right then and there. I swear you've used your sex voice."

"Jumping me? Sex voice? I ... I think you've lost me."

"Damn it, Mark." Lexie cursed. "You are like these chocolates we shared on Valentine's Day. Just irresistible and I want to lick you all over."

"Lick me all over?"

"You know what? Screw you, screw all of you. I can't take it any more."

Mark looked at her as if she'd just gone crazy in front of him but she didn't care. Her body screamed for him, closely followed by her heart, and she hadn't the strength to shut them up.

"I was trying so hard to stop it. I was trying so damn hard, Mark. But it didn't work and then suddenly you stood there, directly in front of me, telling me that you need me and I swear it's a miracle that the wetness didn't drip through my scrubs."

"The wetness didn't ... what?" Mark's gaze shot to her midsection, his mind racing a mile a minute. She couldn't be talking about the wetness he was thinking about, could she?

"There should be holes here." Lexie pointed at her breasts and Mark's gaze shot to her face, then back down to stare at her breasts. "My nipples got hard in one millisecond and it wouldn't have surprised me if they would have poked a hole through my bra."

"Aehhh, ..."

"They are still throbbing like crazy. Actually my whole body is throbbing. If it could talk it would scream at me right now that I should give it what it wanted most."

Lexie stared accusatorily at him, her hands planted on her hips and Mark licked his lips. He couldn't believe that his body betrayed him like that. He had a hard-on since the moment she talked about her wetness. Now his hands itched to pull her into him, to press his hands against her breasts, to feel for himself if her nipples where really as hard as she'd just told him. Clearing his throat, he pushed his hands into the pockets of his coat, balling them into fists.

"Well, what do you want most?"

"I'm weak, Mark." Lexie whispered, pressing her eyes shut, her lips slightly trembling. "I think it's better if you just walk away. I can't promise you that I can restrain myself. I can't even look at you without feeling the almost unbearable desire to touch you." Her voice barely audible now, she gulped hard before she continued with still closed eyes. "I can't even look at you without wanting to rip your clothes off. Without wanting to wrap my hand around you, feel your desire pulsing under my fingers."

"Lex?" Mark asked through gritted teeth, feeling the pulsing she'd been talking about throbbing painfully in his pants.

"I've warned you." Lexie opened her eyes and jabbed a finger into his chest. "I gave you the chance to walk away, so don't complain afterwards that I've tricked you."

"Tricked m ..." Mark began to speak, but Lexie threw herself at him, her lips crushing on his. There was no gentleness, no hesitation. Just pure lust, pure hunger. As if she wanted to eat him up. Mark stood stock still for a few seconds, shocked by her assault, but when Lexie whimpered against his lips, his knees almost gave out under him.

"Damn it, Mark! Touch me. I want to feel your hands on me."

A groan formed deep in his throat and his hand shot up to her head. Threading his fingers into her hair, he pressed her against him. His tongue swept into her mouth, kissing her ferociously. His other hand slipped under her shirt, his fingers scrapping over her erected nipple, confirming that she'd been telling the truth.

Her hand slipped past the waistband of his scrubs, finding her way beneath his boxer briefs and her fingers curled around his erection. Wrenching his lips from hers, he ripped the shirt off her, his fingers unfastening her bra in rapid speed and without pausing for even a second Mark lowered his head and sucked her nipple hard into his mouth. Lexie's hand tightened around him almost painfully and Mark sucked even harder, eliciting a deep moan out of her.

Lexie pressed his head further into her breast for a few seconds before she pushed him back so that he stumbled backwards, his back hitting the wall. Her hands were all over his body, jerking his shirt over his head, her fingers roaming over his abs, her mouth never leaving his.

It took them only a few seconds to get rid off the rest of their clothes and Mark swirled her around so that her back was now pressed against the wall. Lifting her up, Lexie wrapped her legs around his waist and Mark paused for a brief second, looking down into her flushed face, before he positioned himself and drove into her with one deep thrust.

"Damn, you weren't kidding about the dripping." Mark growled, his fingers digging into her ass.

Lexie released a strangled moan, squeezing her walls around him, holding her breath for a few seconds, concentrating every sense on the point where they were connected with each other.

"Fuck me, Mark." Lexie whispered hoarsely. "Make me forget that there was ever a time I haven't been wanting to feel you inside of me."

Mark answered her with a groan, thrusting hard into her.

"Harder, Mark. Faster. Make me feel every inch of you."

Lexie's hoarse commands almost pushed him over the edge but Mark gritted his teeth and pounded mercilessly into her, giving her what she demanded. Lexie's nails left marks on his back, her teeth biting his lip until he could taste blood. But he didn't care. He was acting on pure primal instincts. Feeling the need to mark her as his. Leaning down, he sucked the flesh at the hollow of her throat into his mouth. Biting into it when he felt her walls began to flutter around him. Thrusting even harder into her, she dug her fingers into his head as her walls clutched around him and a few thrusts later he followed her over the edge.

Panting heavily, Mark lifted his head from her shoulder, brushing a damp strand of hair behind her ear. Lexie avoided his eyes, a blush rising up in her cheeks. A rush of shame washed over her. She shouldn't have attacked him like that. She didn't even give him a choice. Putting her feet back on the ground, Lexie slipped sideways, biting her tongue when he slid out of her, already feeling kind of hollow without him inside of her.

They silently gathered their clothes and got dressed without Lexie looking at him once. She didn't even know what she should say to him. Mark followed every move of her with his eyes, waiting for her to look up. But apparently she didn't intend to look at him, nor did she show the slightest inclination that she wanted to talk about what just had happened. But he wasn't willing to just step out of the room without addressing it.

"God, Lexie. How did this happen?"

"I ... I ... I need to go." Lexie stuttered, turning around towards the door.

"No, Lexie." Mark grabbed her arm, holding her back. "I want an explanation. We've almost fucked each other's brains out. I wanna know why. Did you just need to release some pressure and thought I'm the right candidate to have some mind-blowingly fantastic sex without strings? That you can use me like a living vibrator and walk away afterwards as if nothing ever happened?"

"I've never seen you as a sex toy, Mark. Never!" Lexie replied softly.

"I know. But why did you jump me then?" Mark inquired. "You do realize that I just cheated on Julia. And there I've thought I'm over the whole sleeping around bullshit. But apparently being around you is all I need to forget anything and everything."

"I'm sorry, Mark." Lexie whispered, her eyes glued to his chest. "I shouldn't have jumped you like this. It wasn't fair."

"I actually know you don't do ex-boyfriends only because you need sex." Mark raised his hand and put a finger under her chin, forcing it gently upward so that she had to look him in the eyes. "There is something more behind this, isn't it?"

"Yeah, it is." Lexie breathed.

"Don't I have the right to know?" Mark asked quietly.

"I suppose so."

"So ... what is it?"

Lexie took a step back because she couldn't tell him while he was touching her. Wrapping her hand around the door knob behind her back, she straightened herself, determined to get it out and flee the scene immediately. Mark looked at her encouragingly and Lexie knew that she wouldn't let her go before she didn't give him a good reason for what had just transpired between them.

"I love you, Mark. I'm still in love with you and I know I've told you that I don't want to love you anymore. But I actually fooled myself. Because you are the only man I want to love for the rest of my life and I had never a choice. You took my heart a long time ago and I needed to see you with another woman to realize that I can't live my life without you in it. So that's the reason why I dragged you in here. I've missed you so much that I just snapped when you told me that you need me. Because truth to be told, I need you more. I love you, Mark, and the biggest mistake of my life will always be the fact that I let you get away. That I pushed you away. I'm sorry, Mark. I should have kept it together, but the desire to be in your arms again was stronger than I. I'm sorry. I hope you can forgive me."

Before Mark could react in any way, Lexie had slipped out and left him standing in the middle of the room, wondering what the hell had just happened.

I've realized that I really need to write a M-story for these two. So here it is and I'm going to continue it for some chapters. Hope you enjoyed it!