*I do not own these characters*

Chapter 4

Where we left off: she wanted to embed every single moment of this 'experiment' deep into her memory so she will never forget after this night, despite what the future might bring.

When Sherlock re-entered his bedroom with the glasses of wine, he surprised himself with the thoughts of what was to come getting him aroused again. He did not realise his cock could come back to life after so short a time, wonder how many times he could do that in a row? That would be explored later!

Molly took her glass of wine and had a swig to remove the taste of Sherlock's release, 'Not that it tasted bad, just not what you want in your mouth for a long time that's all' she thought to herself.

Sherlock sat on the bed next to Molly also swigging his wine, before long he drained his fresh glass and was taking Molly's out of her hand, making her splutter "Sherlock! I was drinking…." She was cut off by his mouth reattaching itself to hers. His right hand started pinching and rolling her left nipple, making a sliver of pleasure reappear.

Sherlock leant on Molly slightly to hint that he wanted to her to lie down, Molly swung her legs back up onto the bed and lay down. Sherlock hovered over her, placing himself between her thighs, moving his mouth from her plump, kiss-swollen lips to her neck. He kissed a trail down to her breasts and popped a nipple in his mouth. Molly moaned and shivered at the contact, a rational thought appeared amongst the haze,

"Sherlock have you bought…?"

Sherlock removed his mouth from the abused right nipple to cut her off before attaching to the other neglected nipple, "Chest of drawers to your left, second drawer."

Molly reached into said drawer and found an unopened box of Trojan condoms, 'for slightly larger men'. Molly glanced at Sherlock's cock nestled between them, 'Yep I think average size would be a little snug and I don't want any surprises thank you!'

Sherlock glanced at the box, frowning slightly,

"I had to get Trojan, durex didn't have my size, needless to say the assistant wasn't much help either as for some strange reason she appeared to have lost her voice so she pointed me out those," Molly giggled at the thought of Sherlock asking in a chemist if they had bigger sizes of condoms.

She opened the box and pulled one out, reaching down she wrapped her hand round Sherlock's girth and gave him a stroke. Sherlock moved his mouth from the side of her breast and pressed his head into her sternum, moaning. One of his hands moved to inbetween Molly's thighs and tested her readiness for him while the other balanced him over Molly.

"Please say you're ready Molly" He mumbled into her skin. Molly smiled as she moved her hand up, round and down,

"Yes I'm ready."

Sherlock sat back on his knees and watched as Molly sat up slightly to unroll the condom onto his length. Molly watched amazed as it unrolled and kept unrolling until it finally reached the base, strangely enough it made her more excited, the longer it took to unroll. 'I've never had anyone over average length before, hope it fits!' She wondered for a moment before Sherlock repositioned himself between her legs again, positioning Molly's legs round his waist and started entering her.

Molly forgot to breathe for a second and gripped his arms by her head as Sherlock entered her, Sherlock pushed in so far before withdrawing slightly then continued pushing again.

"Oh my god, is there any more to go in?"

Sherlock's strained voice reached her ears "Just a little more! There! I'm in" He stayed still for a moment, cataloguing the feel of Molly's tight passage around him. Molly realising he was grazing her cervix slightly. Molly also realised she had never felt so…full before.

"Molly, you are delightfully tight and hot…..so very hot" Molly experimentally moved her hips and brought a wave of pleasure to them both. Sherlock withdrew and found it easier to move back in. Sweat dotted above his eyebrow as he moved in a steady rhythm.

Sherlock found the tip of him hitting something; 'Ah this is bottoming out so to speak' the pressure was starting to build in his balls again.

Molly felt her pleasure building again in her belly but she needed something more to help it break.

"Faster Sherlock"

The sound of squeaky bedsprings reverberated around the room as Sherlock complied, accompanied by moans and sighs of pleasure. Molly had started moving her hips to help the root of pleasure grow which it was now at a fast rate. Sherlock could tell Molly was getting close as she was starting to clench round him like she did her fingers but these felt stronger. Then he changed his angle slightly as he thrusted back in hard which hit a new area inside Molly causing an explosion of pleasure to wave as her orgasm broke.

Molly arched her back and rolled her hips, wailing her pleasure to the room. Sherlock felt the pressure grow with each clench and roll of Molly's hips until it became too much and let it go, stilling inside Molly, grunting his pleasure.

Sherlock removed himself gently out of Molly while he had the strength to do so, making them both hiss and fall next to Molly. Both were panting, sweating and extremely pleased with the outcome.

Sherlock grabbed a neatly folded blanket from under his bed, silently mumbling 'Thank you John' and spread it over them both whilst rolling over to face Molly.

Molly took this opportunity to manuver herself into Sherlock's arms and much to her surprise he did not protest in the least! Infact HE tucked Her head under his chin and wrapped his arm around her waist whilst he drifted off to sleep!

'Please God; don't let this be a dream! Don't let Sherlock regret this either because I don't…' that was Molly's last thought before drifting herself into slumber.

Phew! Done! How was it for you? (soz couldn't resist!):D

Next: The second day, surely you couldn't think the experiment was over yet did you?