Sheldon was sitting on his spot. So far, all was very normal ... except for all that was around him: music, chaos, alcohol, snacks and people, most of them unknown. Everyone was talking, laughing and dancing. Yes, they were doing, according to social rules, what to do in a party. And in the middle of all the revelry, Penny appeared exultant, dancing with Bernadette and Amy and laughing with them. Sheldon looked away from the girl, trying to expel her from his mind. He turned and saw that Leonard was also very entertaining, kissing Priya on other couch. Until Raj had become the king of the party, without drinking too much alcohol, and now he had two friends of Penny who were listening intently his explanation of supernovae. The theoretical physicist snorted. He was glad that the girl had passed her test, but he didn't understand why they had to celebrate ... in this strange way. Suddenly, one of unknown Penny's friends sat next to him.

- Hi honey! - she greeted him with a rather malicious smile. - What are you doing here so alone?

Sheldon looked at her with a frown.

- You have not formulated correctly your question. If you had, you would ask: - "What would you do here, if you were alone?" - And I would said - "Well, enjoying the solitude, which obviously I can't do right now."

The girl looked at him blankly.

- Wow ... Penny was right. When you talk, nothing you say is understood... But you're so cute. ..!

The girl clung to him on the couch. Automatically, Sheldon stood.

- I'm sorry but I have not the habit of sharing my personal space with someone unknown and whose bacterial flora has also unknown for my immune system.

He walked away, cutting the girl off. Penny, who had seen and heard the scene, could not help laughing. At first, she wanted drag her friend out off the couch. Miranda was a real wolf who lost no opportunity to hunt some unsuspecting male victim. But then she thought it would be fun to see how the brilliant Sheldon Cooper would get rid of the girl. And she was not disappointed. The blonde girl shook her head as she laughed. Saying Sheldon was a "big weirdo" not was enough. He was much more than that. During party, all her friends had approached him, but hadn't talked with him more than a minute. And later, each and every one of them returned saying the same, that guy would be "delightful" if he hadn't such... mouth. Although, in truth, his mouth also was extraordinarily... delightful. Penny gulped. She tried to stop thinking about Sheldon's mouth and continue having fun as usual, but it was quite complicated. Her gaze strayed toward him almost continuously. That damn weirdo was really handsome in that suit. Yes, the same as she had suggested buying it. The same pants which Sheldon took off when he gave that great speech about the space's dimensions. She shook her head, trying to focus her thoughts. She breathed deeply and separated a moment of Bernadette, which at that time was paying her attention to Howard. She walked silently to Sheldon, who was leaning against a corner of the living room, trying to disappear. The girl was placed almost at his side and coughed.

- Hi, honey, what are you doing here so alone? - Said, mimicking amazingly well the provocative tone of her friend. Sheldon looked puzzled and she broke out laughing.

- If that's a joke, I have to say that is not funny. - He said, looking away.

She smiled.

- Come on, Shelly, this is a party. Don't be "spoilsport" and enjoy it. - she said, moving to the beat of the music.

Sheldon's eyes were inevitably drawn to her silhouette. He swallowed. It was hard to ignore her with that green dress which fit beautifully her body. Although ... actually, the kind of clothes she wears didn't care. She always seemed unbearably beautiful. He looked away again, stifling an agonizing sigh.

- Your idea of fun is different from mine. - Said simply.

She gave him a funny look.

- I know that resolve equations it's more fun for you, but it takes getting used to. Look at me. At first I hated equations, but now I think I could tolerate them. If you did the same and you relaxed a bit ... you could find more bearable this party and ...enjoy it.

Sheldon turned his eyes toward her.

- How? Dancing? Seeing how Raj explains what is a supernova to two girls who have no idea what it is a star? Chatting with your friends? - he raised a skeptical eyebrow.

- Oh, come on, Moonpie. You're too demanding. My friends are very nice.

- And ignorant.

She locked eyes with him.

- Hey, do not mess with my friends!

- I don't. Are they who were doing it with me.

Penny held her gaze. For one she wanted to punch him, and for another hand, to push him against the wall and kiss him. It was a terrible dilemma. Okay, he had earned it. Suddenly, she hung from his neck. Sheldon stifled a gasp.

- Penny ... what ... are you doing?

The girl rolled her eyes.

- Put your hands on my waist.

He looked at her with wide eyes.

- What?!

- What you heard, Sheldon. And stop looking at me as if to kill you. - She said angrily.

He swallowed. He refused to obey, but finally he did it, seeing her furious gaze. The girl giggled fun. The young physicist laid his hands on the slender waist, feeling as if put in an electric iron. Penny tried to keep a clear mind, though it was terribly difficult, due to the heat that suddenly began to feel. She breathed deeply.

- Now, listen to the music. - Said.

Sheldon frowned but obeyed. He could heard a beautifull ballad. He looked at her again.

- And? - Asked.

- Dance - She said, in reply. - Do not think, just move like you feel music.

At that time, the girl started dancing in his arms. Sheldon swallowed. A powerful force forced him to continue her movements. Suddenly, the two started dancing, gently wrapped in music. All seemed to vanish around, as if there were no one else at the time. Penny rested her head on his chest, feeling that there couldn't be a better place in the universe. She didn't want to be in anywhere else. Sheldon's heart pounded in his chest as the young physicist tried to dominate all his nerves, tremors and tics. Gradually he managed to relax, but nothing could eliminate those chills that were coursing through his body feeling Penny next to him. The music ended, but they were not even aware of it. They held each other, moving with a rhythm that only they seemed to hear. Finally, they stopped. The girl looked up. She watched his eyes spitting fire. His serious expression seemed to soften a little, seeing shyness she was beginning to feel. Penny smiled.

- Do you see? Dancing can also be fun.

The young man gulped.

- I admit it ... so ... it wasn't intolerable.

She smiled and stood on tiptoes to give a soft kiss near the corner of his mouth. Sheldon thought he would die. First, because he thought she was going to kiss him on the lips, and second, because she hadn't done it... despite her dangerous closeness. She stroked his face.

- Thank you, Moonpie ... - she said full of tenderness.

He looked at her blankly.

- Why?

- For being there... always. - She smiled and kissed him again, this time in the other corner of his mouth.

Sheldon burned her with his gaze. He had a maddening desire to kiss her ... really on the lips, and seeing her so close and yet so far was a torture. That desire was agonizing. He not only wanted to kiss her. He wanted to drive her mad as she had done with him. He wanted all disappear and...

Penny took her eyes off that blue fire. If she continued looking at him, she couldn't contain herself. She couldn't do it, even though there was nothing she wanted more than kissing him, feeling him. But they were surrounded by people and ... the worst is that wasn't the problem itself. An unfathomable sadness flooded her. She knew she was madly in love with that theoretical physicist, and nothing could change that now. She had played with fire and she was reduced to ashes with those eyes, those lips and his whole being. And it was too late to repent. She knew that all would end like this. She was sure he also felt something for her. His way of looking at her, his nervousness, his concern for her... almost since they met... All this betrayed him. But she also knew that Sheldon would die before admitting that he loved her, before admitting he was not a homo novus and that his body responded to the attraction which she inspired him as the body of any human being. Penny almost stifled a sob. The blame was hers, for her stupid wishful, believing that she would be able to defeat the very Sheldon Cooper himself.

She released his neck gently. She stroked his cheek again, helplessly. Then she walked away. Sheldon couldn't even prevent she left. He had lost all his energy just by her contact. His agony was increased. He wanted that damn party was over once and for all. He turned and locked himself in his room, away from the bustle. He stood a moment, listening to the laughter of others, on the other side of the door. Finally, he lay in bed in the fetal position, arms circling his legs, and gave almost a sob. Unfortunately, Penny was not there to comfort him.

Well, guys, it isn't all... :-D I promised you a wonderful chapter... and I hope it does not dissapoint you. But, I must warn that is ... M rated! XDD

The party was already over. Almost all of Penny's friends had already left, and Howard, Bernadette and Amy too. Leonard and Priya stayed to help Penny to order a little.

- Thanks guys, you are sweet. - Penny said gratefully.

Priya smiled.

- It's all right, Penny. It was a great party. The occasion deserved.

The young blonde nodded a little sad. Leonard and Priya exchanged glances.

- Hey, Penny, do not listen to idiot of Sheldon. - Leonard said. - I know him. I'm sure tomorrow he will have reduced his pride and ask you for forgiveness desperately, buying a dozen gift baskets. Why do not you come with us? We get out with the others. Thus we can continue the party and not disturb the neighbours.

She smiled sadly, thanking his words with a gesture.

- Thank you, Leonard, but frankly, I do not want. Go and enjoy very much. I'll finish cleaning it a little and go to bed.

Leonard and Priya looked at her, sympathetic.

- As you wish, Penny, but if you change your mind, you know where we are. - Priya said.

She smiled again. Finally the couple left and the girl was left alone. Well, unfortunately, not completely alone. Furious, she threw away the last glasses which remaining to collect. Suddenly a presence startled her. She gasped at the sight of Sheldon, motionless before her.

- You don't need to make so much noise. - He said.

That was the breaking point for Penny. She just couldn't support anymore.

- You're ... the most despicable human on the face of Earth! Not only you lock yourself in your damn room in the middle of the party, not caring anything or anyone, but also, when everyone has gone, you left your hole to complain that I make too much noise! - she shouted, approaching furious.

Sheldon gritted his teeth, feeling horribly wrong for her words. It never had affected him so much. But he too was overwhelmed by the chaos that dominated not only his apartment, but as also his head. He walked a step.

- So according to you, I am worthless. - he said offended. - It's amazing to hear that from the same person who used my apartment to organize chaos to her liking, who isn't able to abide by the basic rules of coexistence, who does not do anything except to get into my life, in my work and in my mind. - he said, also screaming.

Both looked each other, angry and hurt. Penny pulled the lip, almost crying.

- I have not gotten into your life! And if I did, you can't imagine how sorry I am. - she gasped. - But do not worry, it will never happen again.

Sheldon looked at her. His anger diminished.

- What do you mean?

- I cannot stand this situation. - She clenched her fists. - I no longer take any more. Tomorrow I will start to look for another apartment.

She spoke without thinking. It was actually pain who spoke through her mouth. She could not stand it any longer and turned to rush out of there. However, Sheldon caught up in a couple of strides and grabbed her arm.

- Let me go, Sheldon. - Said, unable to look at him.

- I will not let you go.

She looked up, understanding nothing at all. Sheldon burned her with his eyes. He moved toward her and pinned her arms. Penny let out a gasp of surprise when he ascended his right hand down her back to take her neck. He caught her lips with his in a desperate kiss. The girl gasped as her hands automatically sought contact with his skin, under his shirt. The temperature was raised considerably. Sheldon gently bit her bottom lip, invading the delicious mouth with his tongue. They lost sanity hopelessly. Without knowing how, Penny found herself lying on theoretic physicist's bed, in his room. Her green dress was completely misplaced, revealing a bare shoulder. The girl gasped as she felt his mouth on her neck, her shoulder and collarbone. She was going completely crazy with the simple touch of his lips. On impulse, she grabbed his shirt and pulled it, blowing up all buttons. Sheldon shook his head.

- Was it necessary to break all the buttons? - he asked her.

She looked at him. Oh Gosh! ... Nobody could be more handsome on the face of Earth. His hair was mussed and lips red from kissing. His eyes were the colour of the sea in a storm and his gaze was on fire as he looked at her. His breathing was fast and deep, and the delicious bare chest was moving to the rhythm of each breath, marking a smooth abs. Penny smiled with infinite sweetness and took his face to kiss him. He leaned on his hands to not crush her with his weight. Then they separated.

- Sorry ... I told you ... - he began.

She put a finger to his lips.

- I'm sorry too ... - whispered.

They looked at each other, burning with desire and doubts.

- Sheldon, we don't have to do anything ... no ... I mean ... I do not want to force you to do anything you do not... wish.

He looked at her. How could she be so immensely beautiful? She seemed the Greek goddess of beauty, Aphrodite. For answer, he kissed her passionately on the lips. Penny was dying of happiness. He returned to separate.

- I wish ... - he said in a voice so sensually that caused a million of chills into Penny. - But ... maybe ... I don't dominate as well as ...physical ... - said sad.

She looked at him in disbelief. Did not he know that his simple touch was already unbearably delicious? No, apparently he didn't know. He had no idea of his immense appeal. She stroked his chest, watching how a chill run his soft skin in her path.

- This is like dancing, Moonpie. - Said softly. - Just ... let you go.

They joined in a deep kiss. Soon other clothes ended up scattered on the ground. Despite of the desire that consumed them, they kissed and caressed slowly, as if they needed all the time in the world to meet each other and to believe that this was happening. Sheldon watched to Penny naked in his bed. This picture was recorded on fire in his eidetic memory. Does he really was not dreaming? She looked away, shy. She had never felt like this before, but this time was different. Is Sheldon Cooper who was watching her.

- What are... you looking? - she asked finally fearfully.

He fixed his eyes on hers.

- The most beautiful work of nature. - He replied.

Penny felt die of happiness.

- Really ... do you think I am ... beautiful?

He looked at her blankly. How could she doubt her own beauty? It was as irrational as if he doubted his intelligence.

- Not only I believe it, is the truth. I think if we did a calculation of your proportions, they would be exactly the same as perfect proportions of old Greece.

She looked puzzled. There he was, an irresistible Sheldon Cooper, wearing only underwear, releasing a speech as he watched her, setting fire on her skin. It was so ... strange that she forgot her fears and laughed fun. Suddenly, she sat up, pulling to Sheldon on the mattress and placing herself above him. The young physicist gasped, feeling her body.

- Enough talk ... Dr. Cooper.

She started to kiss him, lowering her lips to neck and chest. She pulled a groan from his throat that sounded like heavenly music. She stroked his chest and her daring hands were descending...

- Penny ... - he panted.

He was dying of pleasure as she stroked his boxer. The girl smiled as sexy as sly.

- I bet you can't recite right now the periodic table ... - she challenged him, stroking him again and causing another moan.

- Hy ... drogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen ...

He precisely ran out oxygen when the girl pressed her pelvis with his, straddling him. Penny laughed and kissed him passionately. The air seemed to boil around. Sheldon could not take it anymore, and this time, it was he who stood up, cornering the girl between his body and the bed. He caressed and kissed her until ripped his name in a deliciously gasp. Penny felt like she was exploding with pleasure. She was right. Sheldon also had to be a genius in bed. He had to be a damn genius in everything. He seemed to be able to learn in fifteen seconds where and how he should touch her to make her see the stars. Nobody ever made her feel this way. Yes, like a treasure. His hands caressed her with devotion. The captivating mix of softness, passion, tenderness and the desire was driving her crazy. And seeing her, he was also driving him crazy.

- Penny ... - panted.

She could not speak. Simply, she raised her hips towards him, in a clear invitation. Sheldon gritted teeth. He wished her so much he had to restrain himself with all his strength not to hurt her. He was introduced gently. Penny gasped. The pleasure was so immense that blinded them. The gentle movements soon became a dance of passion. The spiral of desire and pleasure rose until than an ecstasy explosion overtook them, screaming their names. Sheldon collapsed on Penny, his heart pounding in his chest, in temples, in the ears. She hugged him, pressing him against her chest. For a few minutes they tried retrieve their breath. The young physicist gritted his teeth. He knew he was crushing the poor girl. Shedon gathered his few forces and dropped to her on the bed. Penny seemed to recover well before him. She sat up on one elbow and looked at him.

- I suppose you want to go take a shower with disinfectant right now. - she said pointedly.

Sheldon raised an eyebrow, still breathing hard.

- I would... if I could move.

She could not help laughing. She lay down beside him, but he was removed and slipped an arm under her. The girl immediately snuggled against his chest. The soft beat of his heart comforted her. She was going to say something, but exhaustion overcame her and fell asleep on his chest. Sheldon took her in his arms in an automatic gesture and his consciousness also disappeared on a deep dream.