(Sorry for the delay on this, been a bad weekend so been hard to get in the right frame of mind to finish this, hope you all enjoy!)

Show me your bruises

Late one evening they say goodnight and adjourn to 4B for the night.

Penny's in a good mood, work was light, food was good and just sitting next to Sheldon and chattering away with people always charged her up. Sheldon was relaxed but thoughtful, she could tell there was something on his mind. She tried to figure him out, watching his reactions to things and he seemed a little more tactile that usual, laying his hand on her leg more than once. She trusted him to talk when he was ready, she'd be sure to give him opportunity

It didn't take long.

Almost as soon as the door to 4B closed behind them he wrapped an arm around her waist and steered her the bedroom. She turned and put her arms around his neck, reaching up to kiss his face and whisper "You're eager tonight"

He puts his hands on her waist under her shirt, enjoying the feel of her skin

He sits on her bed, still holding her waist as she stands in front of him. He unbuttons her shirt as she strokes her fingers through his hair. "Show me your bruises"

She steps back and slowly unbuttons her jeans, pulling the zipper down, hooking her thumbs in the waistband as she turns, making it a deliciously slow display as she bends at the waist, pushing the waistband down.

First the pink waistband of her panties appears, then the fabric suddenly narrows to a thin thong as the golden swell of her ass slides into view. He strokes her with his fingertips as she keeps bending, presenting her ass to him when her jeans are around her knees. She stays perfectly still as he examines her, fingers tracing the faded bruises, faint marks and lines. she fights to keep her breathing calm and regular but she finds this sort of thing more exciting that she'd thought she could before, the obedience, the intimacy it brings.

It seems an age before he speaks " you're healing well, almost every trace is gone"

Every physical track at least. She took the spanking well, he knows such stubbornness is a point of pride for her. But it left an emotional mark.

"Thank you Sir." She smiles, still bent over "Having to shower at home for a week did suck"

"now undress for me"

She steps out of her jeans, straightening up and turning back to face him. her shirts already unbuttoned so she just slips it off and casts it aside. Stripping for most guys you scatter your clothes all over the place, she thought, watching his face as the shirt lands in the empty laundry basket. With Sheldon he appreciates the little touches. She twirled on the spot as she unhooked her bra, lifting her arms to show off the swell of her breasts. She slides down her little pink thong and steps out of it, dropping it into the laundry with her shirt. Naked she runs her hands down her body, enjoying the feel of her skin, smooth and warm under her palms.

Unbidden she slides to her knees in front of him, kneeling with her legs spread wide, back straight, awaiting his commands.

He sits and watches her, enjoying the sight of her, the soft blush starting to spread across her chest, the way her nipples start to tighten. Expectation arouses her as much as it arouses him.

"Collar position" he picks up her leather collar as she puts her head forward, sweeping her hair out of the way of her neck. He looks the leather round her neck and buckles it closed. He rests his hand on the back of her neck, enjoying the feel of his collared girl under his hand.

"Now, undress me." He stands.

She leans down, face almost to the floor. She can tell he's in the mood for feeling powerful, she knows what having her at his feet does to him and she fully intends to have him rock hard before she gets to his belt buckle. She's tempted to undo his laces with her teeth but he'll think that unhygienic. She quickly unlaces his shoes with her fingers instead, holding them as he steps free. The same with his socks, pull down and hold as he steps out. She puts socks in shoes and sets them aside.

Now the fun part. She rubs her hands on his legs, presses her face to his knee and starts to slide up him, looking up, letting him see the need in her, how the feel of his body makes her.

When her face reaches his crotch he's rock hard and pressed tight against the fabric of his pants. She rubs her face against his covered erection as she unbuckles his belt. Undoing the button and zip she works his pants down, as his cock comes free she smiles and kisses the tip, she can already taste his eagerness. She can feel the desire building in her, a tight knot of heat - she's going to be dripping by the time she's finished.

As he steps out of his pants he gets impatient, shrugging off his T-shirts. She sits back on her heels with a happy sigh. He's still the same skinny frame but he's filling out with some muscle tone, but more important he carries himself with confidence.

"I've been thinking about your spanking. I don't want you to think of it only as pain"

"It was painful but powerful, kind of cathartic?"

"I feel it needs to be balanced out"

She looks up at him, astonished " you want me to spank you?"

He snorts derisively "No, No, of course not. I just think I need to give you a proper sexual spanking to balance things put"

She bends forward slowly, breathing out in a low lustful sigh "tell me more, Sir"

He sits back on the bed "Get over my knee"

She lies over his knee, stretching over his lap. She looks back at him, nervous "Will you need to tie me again?"

"This is more about sensation play than punishment so it is unlikely. Stretch your arms out and keep them there"

She stretched out over his lap, ass in the air, arms stretched high over her head.

he puts his hand on the back of her neck. "Ready?"

"Green sir"

He gives her ass a light swat with his palm. Just a pat, then another, working back and forth across her buttocks, laying each swat over another til her skin starts to go pink.

She's lying there, stretched out naked and it feels like a slap at first, then the tingles start, the warmth spreads as he builds layer and layer of sensation, light blows over stronger ones, then dragging his fingertips over the places he's struck which made little sparks of pleasure run through her.

It's nothing like the first spanking, that was definitely a punishment. this is a little pain mixed with a lot of sensations she wasn't expecting. He was slapping and tapping and stroking, sometimes just a few like touches were enough to make her moan and push down onto him, she could feel now hard it was making him.

he reaches down to grip her leg at the back of her knee , stroking up to the base of her ass with a firm hard stroke, the slaps her hard, the already hot red skin stinging throbbing. he does the same on the other leg, the throbbing heat making her moan.

He keeps on, stroking and slapping, then stroking and back again.

Eventually she's lost all track of time, just feels like she's floating as his touch shoots fierce jolts of pleasure through her. She's wet and aching for him but he's hardly touching her now, just light fingertip brushes over her ass, which is red and hot to his touch.

"Still green?"

"Oh god yes."

"How did that feel?

"Mmmmm..good." she wiggles. "you enjoyed it too" He's hard, pressed against her. "Will you fuck me please? I need to feel you"

"Sit astride me"

She dreamily gets up on the bed, holding onto him as she swings one leg across him.

He takes her waist and guides her down. As soon as the tip of his cock touches her she gasps and leans into him, working her hips as she feels him slide just an inch into her wet and eager cunt.

He's rock hard and ready but he holds her, savouring the wet eager heat of her.

She starts to rock up and down, desperate for sensation, slipping the tip of him in and out of her.

He grips her ass, deliberately kneading handfuls of her sensitive flesh.

She gasps and grips him. "More. Please. More. Sir. More. Green. More!"

He wraps his arms around her, gripping her tight and pulls her down onto him, thrusting up to meet her, sheathing himself deep in her.

She screams, arching her back, feeling herself spasm and grip as soon as he thrusts.

He keeps on thrusting, turning to lay her on the bed, bearing down on her as she wraps arms and legs around him. She's still riding the echo of her first orgasm when she feels another build, she starts to rock her hips in time with his thrusts, needing him more. She shudders as it takes her, feeling him thrust and spasm with her as he comes.

They sprawl together, trying to catch their breath. She hugs him close, loving the feel of his skin on hers. "That was. Wow. intense. I feel high. Thank you Sir"