Sheldon was still a bit dazed by what had just happened. When he first made the decision to propose marriage he didn't anticipate being engulfed in such a floaty feeling. In the back of his mind he had always known that Amy would agree, but that didn't stop him from imaging all the different ways that the moment could go wrong. Especially considering the way their evening had turned out the last time that he had planned to ask her. Now that the weight had been lifted he had no idea what to do with himself. Amy though seemed to be quite sure of what had to happen. He recognized the signs now, thanks to the experience of regular encounters, as specified by the most resent amendment to The Relationship Agreement.

Amy's body language, normally very controlled, like his own, and yet having a certain feminine fluidity that Sheldon lacked, had gained a slinkyness as he followed her down the hall. He also noted how the hand that wasn't holding her purse was clutching at the fabric of her nightgown, close to where her hip turned into her outer thigh. Once they had entered the bedroom and the door was firmly shut, Amy pressed her body against Sheldon's side and made a noise in her throat that reminded him of a cat's purr.

"Proposal," she said as she removed a box of condoms from her purse before tossing it to land on the discarded bedding in the corner. "We have coitus, tonight, on that bed." Her eyes glanced towards the bed in question and she bit her bottom lip in a seductive smile.

"My family is still awake, aren't you afraid that they'll know what we're doing?" Sheldon asked.

He sucked in a breath through his teeth as her hand ghosted across his waist and reached for the door knob. A click, caused by the locking mechanism activating, sounded and Amy's smile widened.

"I promise to be quiet if that helps you make your decision."

"That promise does make me feel better, but I'm unsure of your ability to keep it."

"I can be quiet if I want to."

Amy tugged one of Sheldon's hands out from behind his back and gave it a squeezed before trading the condom box for the one that held the ring. She then stepped away, taking the ring out as she moved farther into the room so that she could put it on. She peeked over her shoulder as she placed the empty ring box on the dresser and grinned at how intently Sheldon was watching her. Hips swaying in an effort to entice him even more, Amy walked to the edge of the bed and lifted one knee onto it.

"I await your choice Dr. Cooper," she said and pulled the hem of her nightgown so that her pink cotton panties peeked into his view. For a few moments Sheldon stood in front of the door, staring at Amy's backside and fiddling with the closure on one end of the condom box.

"You're a vixen Amy Farrah Fowler," he said as he opened the box and ripped off a packet from the string that tumbled out of it. "Proposal accepted."

Amy covered her mouth in an effort to muffle herself as Sheldon wrapped an arm around her waist and pressed his pelvis against her rear.

"That doesn't bode well for your promise to be quiet," he said as he nuzzled his nose into the crook of her neck.

"Quietness, was promised, not silence," came Amy's breathy reply. She twisted around in his arms and cradled his head in her hands as she kissed him.

"Touche," he said, not even bothering to break away from her kiss to do so.

Unable to keep her amusement over Sheldon's reply in check, Amy giggled as she broke the kiss and pulled on his shoulders to that they tumbled, gracelessly, onto the bed. They wallered around for several moments, tangled in each others limbs. Soon, they became entrapped by swaths of fabric from both her nightgown and the bed, which had been left unmade during their trip to the living room. This caused Amy to giggle some more, because the longer and harder Sheldon worked to detangle the situation, the worse it got.

"Hold still," he grunted in frustration as he tugged uselessly at what he thought was the top sheet, but turned out to be Amy's skirt, which had gotten wrapped around his ankle twice.

Amy endeavored to obey Sheldon's request, tittering as his hands swept over nearly every part of her body in an effort to disencumber their limbs.

"I think we've stumbled upon a quite effective form of foreplay," she laughed once he'd finished and thrown the blanket and top sheet to the floor.

"You call it foreplay, but I call it a massive pain in the you know what." With a huff he pulled his pajama shirt off over his head, then flopped onto his back and wiggled out of his pants and underwear. Sheldon frowned when he looked at Amy and saw that she was just lying there, biting her knuckles in an effort to keep from laughing too hard. "Well what are you waiting for little lady?"

"Nothing," she replied as giggles took her over. It took some effort, but after a taking a minute to calm down she schooled a serious look onto her face and sat up. By the time Amy's face appeared again, from under her nightgown as it came off over her head, she was grinning like a maniac.

"What has gotten into you Amy?"

"You will be soon enough," she was biting her knuckles again, her whole body trembling with mirth and sexual anticipation.

"I fail to see what's so amusing."

"I'm sorry Sheldon, I'm just so happy right now, it's hard to contain."

"Well that's alright I guess, but do try to be quieter. Your last bust of merriment had surely breached the decibel level detectable from outside this room."

Sheldon watched her remove her panties in confusion. Up till then their bedroom activities had always had a serious air about them. Usually when Amy would refer to their encounters she used words such as 'lovely' and 'sweet' and 'sensual.' Those were not adverbs that he would use to describe what was happening between them in that moment, but as she draped herself over him, now as nude as he was, something in his brain told him to let it go. Besides, she had just told him that she was happy, and that's all that really mattered.

As Sheldon was welcoming Amy's contact she picked up the condom packet, which laid forgotten where he had dropped it near the pillows earlier, and tore it open. She stroked him, in preparation to put on the prophylactic, and grinned at the sigh he let out.

"Is it my turn to be on top?"

Sheldon bit his lip and tried to focus on Amy's question and not what her hands were doing. "No, but seeing as you have the situation handled I'm willing to give you this one."

"You'll give me this one," she snickered as she shifted her legs around him and began to accept him into her body. "Don't you mean you'll let me give you this one?"

Sheldon groaned quietly and kissed Amy's temple, his hands reaching to grope gently at her hips and buttocks. He had a vague notion that he should know what she was talking about, but the rhythm that she had fallen into was setting his body aflame, and he could think of nothing else.