Sorry for the delay in getting this chapter done - time just got away from me. And now here we are...another steamy encounter for McStizzie...enjoy!

Chapter Five - Wanting More

"So, how's things with that new girlfriend?" Addison asked Mark as he poured a cup of coffee. She leaned a little closer to him, pulling the collar of his shirt aside with a little whistle. "Must be good, judging from the size of that hickey…"

"It's just fine," he sighed. "I think."

"Do tell." Addison raised her eyebrows over her coffee cup. "You mean you're still with the same woman after a month? That's some kind of record for you, isn't it?'

"Don't start with me, Addison."

"Oohh…touchy today?" She couldn't help but tease him just a little bit.

"Don't you have work to do?" he asked, stopping at his office.

"Of course, but this is much more interesting."

"Look, she's driving me crazy, if you must know," Mark admitted. "Just when I think I have her figured out, she does something that totally surprises me." He thought of the crazy places they'd been intimate, the way she was able to make him do things he didn't normally do.

"Maybe that's a good thing – you need to have your ego shook up a little bit from time to time…"

"My ego?"

"You're the one that usually is in charge, Mark. You just are having a difficult time accepting the fact she's got your heart in her talented surgeon's hands…"

"Hell no, Addison…I'm not in love with Izzie. I can walk away from this any time."

"Seriously?"

"Yes, seriously. And I'm still in charge…"

^-^-^

"So…you're seeing Mark again?" Meredith asked, peeking into Izzie's bedroom after work.

"Yes, he's taking me for dinner." Izzie slipped into a black dress with spaghetti

"Oh that sounds romantic…" Meredith smirked. "Dinner is always a good sign of that."

"It's not romance – didn't we have this conversation?"

"Izzie…you've been almost exclusive with him since you met him…wait, you haven't been out with anyone else…"

"Mer…" Izzie rolled her eyes.

"Where is he taking you?"

"Erm…the seafood place along the Bay…"

"Oh that one…" Meredith nodded. "Romantic…dark…lots of candles…he's falling for you…"

"Is not…"

"Is too…and you like him…"

"Mer…don't you have something else to do...like go jump McDreamy, or something?" Izzie glared at her friend, who just giggled. "Oh, there's the doorbell…go…"

"Iz! This is my house, remember?" Meredith grumbled, as Izzie hustled her along the hallway. Derek emerged from the bathroom, rubbing a towel over his wet hair, bumping into Meredith as Izzie pushed her out of the way.

"Go…have sex, or something…" Izzie laughed, running down the stairs eagerly.

"Hot date?" Derek asked, amusedly, putting his arms around Meredith.

"You mean me?"

"Who else?" he grinned, easing her into the bedroom, as she giggled.

"Sheesh…" Izzie rolled her eyes, as she opened the door. Mark lounged against the door frame, dressed impeccably in a charcoal suit that emphasized the breadth of his shoulders, crisp white shirt, and subdued tie. He exuded an air of relaxed masculine confidence, and he whistled wolfishly at her, his eyes gleaming with appreciation.

"Very nice, Izzie…just as hot as New Year's…" he said, taking her hand and pulling her in for a hot kiss, his tongue invading her mouth.

"Hi Mark," she murmured. "I'm ready to go…"

"Not quite," he said, stepping inside the house and shutting the door.

"What?"

He ran his hand up under the dress. "You won't need these…." He smirked as he hooked his finger in the barely there anyway thong, a tiny whisper of silk confection that just covered her.

"Mark…"

"Indulge me, Izzie..." he murmured in her ear.

She gave him a look, but obediently slid them down her legs, stepping out of them daintily. He bent down to retrieve them, and slipped them into his jacket pocket. "My souvenir of the evening."

Izzie shivered, feeling exposed without them, tiny as they were. "Are you crazy?"

"Iz, it's just you and me this evening, sitting in a darkened booth, drinking good wine, eating good food. I just like to think of you naked under the dress," he coaxed her, sliding his hand under her dress again, brushing his fingers against her pussy, which was suddenly alive with a mind of it's own. Izzie shuddered at the contact, a throaty moan bubbling out of her as he touched her softly. He kissed her again, starting a thrumming heat inside of her. She clutched at his arm to keep from wobbling at the sensation.

"God, Mark…this is insane…"

"Now we're ready to go." He grinned at her, stepping back from her with a little wink.

Izzie let him lead her to his car, a low slung model that just screamed luxury. He opened the door for her, and she hesitated, finally getting in, the short dress riding up higher as she swiveled into the seat. Mark got an eyeful of her now damp pussy lips, before he shut the car door. Hot desire swamped his own thoughts, as he went to get in the driver's side, his cock reminding him suddenly how badly he wanted her. Once inside the car, he leaned over to kiss her again, the seductive aroma of leather and arousal heavy in the small car. She felt the telltale wetness slipping out of her, the butter soft leather seat against her bare legs adding to the decadence of the night.

He pulled away from her finally, both of them breathing hard, lust and passion flaring in their eyes. "This is going to be good, baby…" he breathed, giving her his usual sexy grin. "Just wait and see…"

^-^-^

Halfway through dinner, Izzie was already feeling the effects of the rich red wine she'd consumed. Mark laughed softly, seeing the soft rise and fall of her chest, the curve of her breasts looking delectable in the warm candlelight. "We don't have to rush, we have all evening, babe."

"I'm not sure I can last all evening like this," she told him, drinking more wine. The alcohol ran along her veins, warming her even further. Mark moved around the table, to sit beside her, and leaning in close to her. His hand rested on her thigh, inching up higher, hidden under the table. His lips grazed her temple.

"I want you, too, but I'm willing to wait," he murmured hotly, touching her with the tip of his finger. Izzie nodded, unable to trust her voice at the moment. God what was he doing to her, and could anybody see them? Her eyes were caught on the flickering candle, almost hypnotized by the dancing light. She shivered, as he stroked her lightly, sliding his hand back down her thigh, ending at her knee. "Okay, I'll give you a little break for now." She looked over at him, seeing his eyes gleaming with desire

But without warning, he dropped a kiss against her cleavage, stroking a little path with his tongue before he sat up again quickly. Izzie's body shook at the sudden kiss, shocked at the erotic thrill that it gave her. The fork in her fingers clattered to the floor, and she giggled a little.

"Hmm, I guess I should pick up that fork you dropped," Mark said, dropping down to look under the table. The humming continued in her pussy, and then he put his mouth on her thigh, and she just about screamed.

"Shit, Mark…" Izzie clutched the edge of the table.

"Found it!"

He sat up again, just as the waiter came by to pick their plates up. "Ah, you're done here?" he inquired carefully.

"I think so…" Mark replied, feeling Izzie's fingers creeping along his thigh, squeezing him lightly. "Just bring the bill…"

"You're sure I can't tempt you with dessert?"

"I think we've got that covered," Mark managed to assure him. As soon as he disappeared, he turned to Izzie. "And you are going to be very sorry for teasing me, my dear…"

"Me?" she protested innocently. "What about you…insisting on me going without underwear…nearly making me come…"

"Just nearly?" Mark smirked. "Then I haven't done my best…."

As soon as they were outside, the valet jumped to bring the car around, and Mark helped her inside, his hand lingering on the damp length of her thigh before he shut the door. Izzie looked over at him, her eyes hazy with anticipation. "Great dinner, Mark…"

"The best is yet to come, honey…" he assured her. As he drove, he flicked his eyes over her from time to time. She leaned against the soft leather seat, her body humming in need, realizing he was taking her back to his place.

"So, you're ready for dessert?" he asked seductively, pulling her close, after he stopped the car. His hand pushed her dress higher, his palm covered her pussy, as the desire continued to hum inside of her. Kissing her deeply, letting his tongue wind around hers, adding to the erotic lust that thrummed between them.

"I want you right now, babe…." The straps of her dress fell off her shoulders, as he kissed her harder, feeling her shake. Ripple after ripple of desire went through her core, as Mark's mouth found her breasts. "You looked so damn hot during dinner, babe…" he murmured, "all hot and shaking, with that look you get when you're coming…I could've fucked you right there on the table…"

Izzie managed a small laugh, despite the throb in her pussy. "I would've let you…"

"Mmm, now wouldn't that have been fun…"

His hands pushed the dress a little further down, exposing her breasts completely in the dim light of the car. "But this is kind of erotic here too…"

"But…what if someone catches us…?"

"We'll go in soon, I promise," Mark assured her, running his finger around her nipples, one by one, seeing them swell even more in the cool air. "Just come for me now here, Iz…I want to see you come here, shaking and wet, before I take you inside. Can you do that for me?"

The little challenge in his voice made her shake a little more and she closed her eyes. The smooth leather of the car seat caressed her back, and with shaking fingers, she smoothed the dress down further on her body. It slithered down her legs and to the floor, leaving her naked in the moonlight that came through the windows. Her legs fell apart, as Mark watched in fascination. "Perfection…" he muttered, his cock now rock hard.

His hand slid between her legs, fingers searching her damp folds, finding the quivering clit that was already throbbing. Izzie let herself go, shutting everything else out, as she surrendered to the deep, shuddering need that she been holding off all evening. All the tiny ripples, all the quakes, that had teased her, the moans she'd suppressed came bubbling out of her. "Mark..god…oh god…" She bucked and shook, riding one wave after another, her skin damp with sweat, not caring where she was, just needing the release that flooded through her.

"Go crazy, Izzie…" he breathed, unable to resist touching her, letting his other hand slide along her ribcage, cupping her breast. "Don't stop, just let it go…"

"Yes..oh damn…YES!" A final spasm seemed to go from her breasts, to her clit and through every nerve in her body. She fell back against the leather, shaken and blissfully sated, as Mark slowly let her go. Izzie sighed, trying to breathe normally, finally moving over to him, and taking his face in her hands. "Incredible, I never imagined doing anything like this…I feel totally wicked…"

"God, babe, let's go in and you can do wicked things to me before I explode right here…" He shrugged out of his suit jacket and draped it over her shoulders. It was big enough on her to hang down just to her hips, covering her to some degree, if you didn't count the way it gaped open across her chest. Mark hurried out of the car, opening the door for her, and helping her out. "Nice, very nice…" he told her with a whistle.

Leading her inside, he slammed the door shut, and picked her up, intending to carry her up to bed. Instead she let the jacket slide to the floor, winding herself around him, one leg around his, pulling him to her. "Here…I want to do this here…" They stumbled towards the couch, falling onto the soft cushions.

"Hell yes here..." he replied, lost in the urgent sexual fog that invaded him. He ripped away his tie impatiently, as she undid his shirt. Her hands lingered on the smooth expanse of his chest, tickling his nipples, stroking with her tongue. He stripped the rest of his clothes off, falling over her eagerly. Her hand found his cock. "Oh god…yes…you had the right idea, babe…"

He shifted on his back, and without hesitation, she rose over his cock, and slid down onto him, until he was deep inside of her. Almost forgetting to breathe, at the feel of her surrounding him, sliding wetly around him, Mark thrust up into her hard. Angling his cock to hit her clit, gripping her legs, as she rocked over him. Izzie bent over his chest, her breasts tantalizing him, as she kissed him deeply. "Come for me now, Mark..." she urged him, clenching around him, as he groaned and drove into her one last time, coming in an intense rush.

She kissed his throat, sucking hard enough to leave a bruise, and grinding herself over him, demanding just as much as he was. Again and again he pumped into her, until they were both sated and spent, and she was gasping for air.

"If that was dessert…" she mumbled against his chest, as his hand idly stroked her back as they recovered.

"…it was…"

"…then I want more…"

Mark's laughter rumbled under her cheek, and he kissed her softly. "Anything you want, babe...anything you want..."