Thanks as always to everyone for reviewing the last chapter!

This time around we have a return to Mark/Izzie again, and I have to warn you, it turns up the steam again. I have to admit, I'm not always a big Izzie fan on GA, but somehow, writing her paired with Mark cranks up the hotness. Enjoy!

Chapter Nineteen - Crank up the Heat

Mark looked across the table at Izzie, watching the candlelight play along her features. They had finally gotten around to having that dinner date, and he found himself enjoying her company more than ever. They both had shared horror stories about modelling – the crazy hours, the demanding photographers, the weird things that went on behind the scenes. He took her hand across the table in their intimate back booth at Moonglow. "Enjoying the meal?" he asked. "I'm happy to see you're actually eating, not like some of the girls I've dated. One girl only ate lettuce…nothing else. I swear, it was like dating a rabbit."

Izzie grinned. "I do eat – but I work out like a fiend to offset it. My trainer despairs, but then he just works me harder." She took a bite of her steak, savoring the taste. "Hmm…I do like meat…" Her tongue swiped along her lower lip suggestively.

"You are being very naughty, Izzie Stevens," Mark groaned softly, his body responding to the mental image he got from her words. "You're not like any other woman I've gone out with before."

"Is that good?"

"Very good." Then he felt her foot caressing his calf beneath the table, and he gripped the stem of his wineglass in reaction to the sensation. Just then the waiter appeared to check on them, and Mark shifted in his chair uncomfortably. Izzie bit her lip, as she continued to stroke his leg. "We're fine…" Mark managed to spit out, and the waiter gave him an odd look before disappearing again. His throat felt suddenly parched, and he took a gulp of wine.

"You okay?"

"You're tempting me, Iz, and you might be sorry," he said softly. "I could very easily throw you on the table…"

"I thought you were hungry.."

"For you right now, the hell with the food…"

"Ah, but what about anticipation…" she teased him, pouring more wine into his glass. "Think about that…how good it will feel later…sliding into me, how wet I am for you, how much you want me…"

Erotic images flooded his thoughts, and he pictured her beneath him, giving herself up for his cock. He shook his head to clear it, and moved closer to her to be able to kiss her before whispering in her ear. "…and how much you want me, baby…think of my mouth on you, licking your, teasing you until you're even wetter…"

"Not helping, Mark…" she whispered, caught up in his words.

"Sorry…" he replied, the look in his eyes telling her he wasn't the least bit sorry.

Izzie leaned over to him, so that he could see how dangerously close she was to falling out of the dress. "Tease…" he murmured, quickly running his finger along the edge of the bodice, making contact with her nipple.

"Naughty…so naughty…" she told him, holding his gaze as he stroked her a little more brazenly.

"Very…" Now his voice was thick with desire, unable to think of eating anything.

"Mark…the food…?" she teased him, seeing his eyes still on her cleavage. She started to nibble on a few bites again, almost moaning in appreciation at the taste. "This is really good…you have to try it…" Her eyes danced as she licked her lip, making him groan again.

"I can't take it any longer, Izzie, or I won't be held responsible for my actions," he said, dragging his eyes away from her mouth. "You win…"

"I didn't realize there was a winner in this," she giggled, feeding him a piece of steak. He grabbed her hand and licked her finger, winding his tongue around and across her palm, so that she shivered.

"I give in, I want you so bad I'm not even sure I can drive home safely, at this point…" he conceded wryly.

"No self control…sad..really…" she teased him, her body clenching at the raw desire in his tone.

"Honey, I gladly admit I have no control when it comes to you," he told her, "…now let's get out of here…"

He managed to get the meal paid for, and they hurried out of the restaurant, into the cool evening air. Mark snaked his arm around her waist as they waited for the car to be brought up, bringing his mouth to her ear. "We aren't going to make it back to your place, are we?"

She shook her head. "Not even close…"

By the time they were halfway there, Mark's thoughts were distinctly not on his driving, and he jerked the wheel sharply, pulling a hard right into a deserted parking lot. He slammed the car into park and shut it off. In the sudden quiet, their hard breathing was the only sound, as they stared at each other, erotic heat high and demanding between them. "Now you can pay for teasing me at dinner…." And he pulled her against him finally, kissing her deeply, his tongue assaulting hers, rough and aggressive. Izzie kissed him back equally hard, almost delirious from the need she had felt building all evening.

He dragged her as close as he could in the confining space, the gearshift irritatingly in the way. His hands pulled impatiently at the straps of her dress, pulling the low cut material down her arms. The shock of the cool air along her back made Izzie shiver, as her own hands rubbed his cock through his pants. Still kissing, tongues searching and teeth nibbling, Mark cupped her breasts that now spilled out of the dress. "Ohmigod, Mark…" she moaned, "I've wanted you like this all damn night…"

Her fingers worked the zipper down a little, but her movements were hampered by the awkward position they were in and she sighed in annoyance. "This isn't working…" Mark agreed, backing away from her and raking a hand through his hair. He grinned at her in the semi-darkness of the car, the windows starting to steam from their frantic breathing. "I feel like I've gone back to my high school days, groping in the car…"

"I'll bet you did a lot of that, didn't you?" she teased him, her hand lingering along his groin.

"Not as much as you'd think," he replied, tracing a line down her chest, over the nipples one by one, before he lowered his head and licked her, his tongue making wet lazy circles around the sensitive tips.

"No…I can't believe that…" she giggled.

"It's true," Mark sighed, "but I'd rather not have a flashback right now….I have other things on my mind…get out of the car…"

"What?" Izzie looked at him, puzzled.

"There's no room in here, without causing a hernia…" he said, with a wicked grin.

Izzie took a quick look around the dark parking lot; they were situated in the corner, behind a bank of bushes. "All right, I'm game if you are…" she said quietly, stepping outside quickly. It felt decadent and erotic, standing in the dark, her dress falling down, as she waited for Mark to join her. He pressed her back against the car, his hands now free to caress her everywhere, his mouth covering her breasts, his hand inching up under the skirt again. He caught her mouth, crashing his lips against hers forcefully, his hips grinding against her. Her leg caught around his, pulling him even closer, as she bucked and gave over fully to the sensations rocketing through her. The cool hard metal of the car against her back, and Mark's heat covering the front of her, added to the naughty element, and she almost sobbed from the intensity of the climax that hit her.

"Do it again, baby…c'mon…" he muttered, finally dropping to his knees, and putting his mouth against her clit. The combination of the climax still reverberating inside of her, and his tongue sent her over the top again, and she thought she was going to collapse, as the sensations went on and on.

"Oh god, Mark…" she murmured, as he caught her against him. For a moment, they swayed together, as she recovered. Then her hand sought him out again. "Your turn, honey…" she murmured, unzipping the pants, and bringing his cock out, fondling him. After all the stimulation during the evening, he felt sure he wouldn't last long, as she dropped down to take him in her mouth. His head went back, as she stroked him, the pure thrill of it making him even more aroused.

"I need to be inside of you," he groaned, feeling too close to the edge to wait any longer. "Get up here." He helped her stand and then spun her around to face the car. She braced her hands on it, as he lifted the skirt again, his warm hand sliding over the cool skin of her ass. A little breeze rippled along her body, and she could hardly breathe, she was so aroused and desperate for him. Mark caressed her lightly, and she gasped, but then he was driving deeply into her, so fast that she almost screamed. Spreading her legs wider, she took him in as deeply as he could go, his lust and his need for her overpowering everything else. She matched his thrusts, as the orgasm started to build like a tidal wave.

"Oh, god, please…harder…" Izzie begged, the need for him to take her harder than ever, after the teasing and the drawn out arousal during the evening. She wanted to be wild and crazy, out here in the open.

"Yes…fuck yes…" he muttered, holding her with one hand, while he stroked her ass with the other, thrusting hard and long, his own body ready to explode. He clenched his teeth, as the heat started to take him away, her tight pussy too hot and wet around him to resist any longer. "Hold on, babe…" Grinding against her, each thrust pushing the limit of his endurance, until it was too much, too good…too intense to stop.

Izzie's head flung back, her thoughts lost in the rush of the moment, her body clenching around him. The world spun and she finally screamed, not caring anymore…just drowning in the feeling of pure delight that hit her again and again.

Mark fell over her then, his weight heavy against her, as they panted and moaned. She felt dazed, as he helped her turn around to face him again. Her legs were still shaky, and she clung to him, laughing a little at what they had just done. "That was insane," she whispered, as he kissed her forehead, and then her lips.

"I know…totally crazy," he agreed, hugging her closer, running his hand along her smooth back. "And we better get out of here before we get caught. It would be a little difficult to talk our way out of this if a cop came by," he laughed softly, helping her pull the dress back up over her chest.

Izzie took a quick look around, suddenly overcome with worry that someone might have been lurking around, listening, or worse yet, taking pictures. "Mark…what if…"

"Shhh…there's nobody here…" he assured her, kissing the soft hollow of her throat, before he stepped back. But suddenly, bright headlights arced through the previously deserted lot, and they exchanged a quick look. "Get in the car, now…" he hissed, fumbling to pull his clothes together.

Breathlessly, they scrambled into the car, and he managed to get it started and drive away, trying not to act suspicious as they made their way back to the street. The black and white police car slowed as they passed, but Mark nodded briskly, avoiding any eye contact, and the other car didn't stop. Izzie dissolved into a fit of giggles then, releasing the breath she had been holding. "Ohmy GOD…" she laughed, helpless with relief and limp with mirth.

"Too damn close," Mark agreed, allowing himself a mischievous grin, before sliding the car back into traffic to head back to her house.

The cell phone buzzed on the nightstand, and Mark groped for it blindly. Izzie mumbled something in her sleep as he moved away from her, hugging the pillow beneath her. He squinted at the display, then read the text message. "What the hell…?" he muttered, sitting upright, and looking at it again.

Mark…thought you should you are going to be a Daddy…

"Aw, no fucking way." Mark scrubbed a hand over his jaw in frustration.

"What is it?" Izzie asked sleepily.

"Just that damn woman…again…"

"Again?" Izzie moved closer beside him, taking the phone out of his hand. "What? She's pregnant?"

"She's lying, I swear, Iz I never slept with her, I was telling the truth about that. I'll take DNA tests, whatever is necessary."

"I believe you."

"What?" Mark turned to her.

"You're a lot of things, Mark, but I'm sure you would take responsibility for a child." She held his gaze. "Right?"

"Yes, hell yes…"

"Then we'll get through this. She can't get anything from you."

Mark pulled her into his embrace. "Yes, we will," he said softly. "Thank you." He kissed her lips, with a sure passion and tenderness that took her breath away. This his phone rang again, and he pulled back. "Not again…damnit…"

"Ignore it, just make love to me," Izzie urged, falling back against the pillows, and opening her arms to welcome him to her.

A/N - I had this idea in my mind before the promos for this week's episode came out...but it will remain to be seen if it's Daddy Mark either here, or on GA.... ;o)