Okay, here I am again, please forgive me!, life has been hell, but I am not quitting as I have already told you. Thank you so much for the reviews, the follows and favorites, you guys bring great joy to my life by knowing you are there reading, I am really honored. I hope you like this chapter and I would love to hear your comments. Now, let´s read.

Disclaimer: I own nothing, except my pervy imagination. TBBT belongs to Chuck Lorre and Bill Prady.

The preposterous experiment.

Penny stared at Sheldon in expectation. After she opened her door he had entered her house walking briskly and took a sit on the aqua couch. That had happened about 5 minutes ago and still he was silent, fidgeting with his fingers and avoiding her eyes. She didn´t say a word. He should talk first. He had come to her after all.

-"Penny"—His eyes finally found hers and he took a deep breathe, as if mustering courage. –"I am going to be straight"—he cleared his throat—"I need your help".

Penny only nodded. Inside she was jumping like an excited little girl with a candy. But this was Sheldon. He was like the baby deer, so, slowly, cautiously. But he fell silent again and avoided her eyes. Okay not that slow. Maybe a little prodding.

-"Okay sweetie, I am listening". Her tone was nice and friendly.

-"First of all, I want you to compromise to full secrecy about everything that is going to be discussed furthermore"—He raised an eyebrow, glaring at her—"I request a pinky swear"—He raised his right hand with his little finger raised.

-"OOOkay"—She met his finger with hers while rolling her eyes at this childish behavior. Now she couldn't tell anyone…drats!.

Sheldon cleared his throat again and started—"I am sure you know everything about what happened yesterday at my office in Caltech. After all you are Amy´s best friend."—He paused, waiting for her to answear.

Penny couldn´t deny it—"Yes Sheldon, she told me about your little…encounter"—She was very careful with her facial expression. Baby deer, she kept telling herself".

Sheldon felt his face burning again, but kept going. He wanted to be straight, the sooner he would make himself clear and find an answer, the better.

-"Penny, I find my self in a terrible conundrum. I have been feeling strange as of lately. I can´t focus at work, I keep thinking about Amy Farrah Fowler all the time. Well, not just thinking but…fantasizing about her".—He breathed deeply—"I think this is my own version of Pon Farr. Surely you know what I am talking about, you have watched enough star trek haven´t you?"—Penny just nodded so he continued—"I have sought advice from Leonard and his brilliant mother about my symptoms. Unsurprisingly, Leonard pushed me to act like a hippie, talking about feelings and nonsense. Dr. Hofstadter, however, gave me a totally baffling answer"—He started fidgeting with his hands and averted his eyes from her—"She suggested to me to indulge into my baser urges by starting a physical relationship with Amy"—He stopped talking and his face was almost purple.

Penny couldn´t believe it. Beverly Hofstadter told Sheldon to have sex with his girlfriend?. Wow! That was the woman who was responsible for her own orgasms like since, forever. Penny had this feeling that this couldn´t be as good as it sounded, Beverly was nothing near romantic. –"And what do you think about it Sheldon?"—She tried really hard not to betray her emotions in her voice—"Are you ready for…you know, get physical with Amy?". She stared at him.

He kept fidgeting on the couch and his eye started twitching. He looked positively terrified.—Oh my god—thought Penny—I think he is really going to snap right now—"Okay honey, take it easy, everything it´s just fine"—She tried to reassured him and placed a hand on his forearm.

"Really, Penny?"—Sheldon scuffed—"everything is going to be just fine?. Well, I am sorry to tell you that I don´t think so!"—He breathed heavily—"I need to make an experiment now, so please stay still"—He then took her arm and pulled her towards him, leaning to her and kissing her hard on the lips.

Penny gasped in surprise and couldn´t even breath during the two second kiss, her eyes wide while watching his closed eyes and his forrowed eyebrows. She never had a chance to react. Then he released her as if she was poisonous and stared at her with wide eyes before standing up and run out of the room.—"Sheldoooon!"—Yelled her in fury.

-"I need to brush my teeth, Penny, just a minute!"—His voice was panicked. She heard his apartment door being shut and took her face in her hands while trying to process what had just occurred.

-I can´t believe it… what crap is this!—Penny was beyond shocked and kept muttering under her breath—"What the hell, what the hell…"— She was still sat there when Sheldon reappeared at her opened door and knocked in is customary way, although he could see her and the door was opened. He kept staring at the floor and looked so much like a lost toddler that she forgot everything about yelling at him and pated the sit beside her—"Come on Sheldon. I want you to tell me what was all that…crazy kissing thing about"—She tried speak to him gently.

-"Penny…my sincerest apologies about the…experiment I just conducted on your person. In my defense, I can only argue that I am deeply desperate to know what is going on with me"—He looked at her with pleading eyes—"I am sorry, but I needed to know… I needed to be sure about this"—he entered and closed the door, sitting next to her. –-"Leonard told me that I was becoming a "red blooded man", and that I must accept it. My father used to say that a "red blooded man" was always ready…put it this way… to take an opportunity with any lady"—His face was purple

now.

Penny breathed deeply and tried to control her Junior Rodeo instinct—"Okay Sheldon, you and I are about to have a big problem, so you have better try to explain yourself before I got all Nebraska on your ass". She stood up and put her hands on her hips, glaring at him.

He glared back at her, but hunched slightly under her threat-"Excuse me!... that was a little uncalled for. I have already apologized. I am just trying to explain my behavior as a desperate attempt to demonstrate that I am not just acting under my animal instincts. If it were so, I would have felt a physical response to you too…but I didn´t"—He blinked at her repeatedly as if afraid of infuriating her even more—" I do not mean to offend you Penny, but even if you are very aesthetically pleasant, to quote Amy´s words, you "don´t get my motor running". He said it looking straight in her eyes.

-"Thank god"—Penny muttered under her breath.—"Well, sweetie, we both know that, just as I told you once "you are so not the guy" for me either".—She started pacing her living room—"Now, I would like to go back with this Pon Farr thing you said before"—She sat again next to him, looking at his eyes—" Sheldon, do you really think that you are going through this "fever". Maybe, just as you recently discovered this is not about any woman, this is about your girlfriend. Maybe this is about you having feelings for her"—

She leaned forward, winking at him, okay, here we go, she thought—"You know honey, when a man only wants to be with one woman, that usually means that the man is…in love. So… are you in love with Amy, Sheldon?"—Well, this is it, I dropped the bomb. Penny stared at his blank face, waiting anxiously for an answer, she was almost sure about what it was, but he needed to say it, for his own good. She really shipped Shamy, and wanted for them to be happy.

Sheldon´s blank face was only a façade. Inside his head was a hurricane. He remembered his dream, when he confessed his love to Amy. Could it be truth?. Could the brilliant Dr. Sheldon Lee Cooper be in love?. Impossible!, he thought, I am not a hippie, I am better than this. But his mind presented him with a lot of images of Amy, how she had been always so thoughtful and considerate to him, how he had felt incomplete without her when they terminated their relationship so long ago. He had had karate chopped Leonard when he thought they have had coitus. The confusing and uncomfortable sensations he had experienced when she dated Stuart. The baffling response to her crazy experiments. The murderous feelings he had felt when she told him she was going to a wedding with another man. He thought of his boiling blood when he touched and kissed her. The illogical urgencies to feel her skin against his.

His breathing labored and Sheldon felt the impending symptoms of a panic attack. The walls started to close around him, his heart was frantic in his chest and he couldn´t breath properly. Could all that mean that he was "in love"?. He gasped for air and looked at Penny.—"I don´t know Penny… I "—He just couldn´t breath and was as white as chalk.

-"Oh, my god"—Penny clamped her hand in her mouth—"Okay honey, calm down. I need you to put your head between your knees and breath"—He did as he was told and slowly felt better.

He straightened and stared at Penny, still a little pale—"Penny, I don´t know if I love Amy Farrah Fowler, I am not even sure about what romantic love is, really. All my life, I have been uncomfortable dealing with feelings and emotions. This is really too much for me"—He stared at his hands and continued—"I have recently accepted that I have physical desires for women. Well, that is not accurate enough. I have physical desires for a woman. I desire Amy Farrah Fowler"—His voice was firm and clear and he squared his shoulders.

However, his confidence vanished and he fidgeted with his hands again, hunching his shoulders—"The truth Penny is that I can´t even think about her without feeling this powerful desire to ravish her. Bits of stuff I read in that horrible book you gave me keep coming to my mind over and over again. I am completely out of control. If Leonard hadn´t entered my office I think I would have had ravished her on my desk, no matter if she wanted it or not."—He put his face into his hands hunching under the shame and took some steadying breaths.

Penny was open mouthed. Now she got why Amy had been so freaked out. His sex-less boyfriend suddenly had morphed into a sex beast. Well, a whacka doodle sex beast, anyway. She gently stroked his forearm, reassuring him—Okay, sweetie, that´s quite normal, you don´t need to feel guilty about it, those were your instincts kicking out, believe me…

Sheldon raised his head and focused his tortured eyes on her, interrupting her —"you don´t get it. She told me to stop and I didn´t listen to her"—He breathed deeply—" We are both virgins and I am not expert, but I believe that is the protocol for the boyfriend to be gentle and make sure that the girlfriend is well treated, so as to ensure for her a good first experience. And I was just being such a beast that I didn´t really thought about her. I was just thinking about me. I was so angry at the thought of her with another man that I insulted and mistreated her and then… I groped her. Just as my father would have done to that blond bar tender that…"—

He hunched again and looked at the floor—" That scares me Penny, more than anything. I do not wish to hurt her"—He straightened again and looked at her with resolution—"I need you to do something for me Penny. I need you to explain Amy that I won´t see her until I am under control again. I attempt to submit myself to a rigid kohlinar program so as to control this unwelcomed urges…"-Penny interrupted him with a raised hand.

-"Hold on, sweetie"—She sighed loudly, this was going to be difficult—"Sheldon, I think you owe Amy an explanation. She is hurt and confused. I think that she isn´t angry at you about what happened, but she is mad and sad because you are not talking to her. I think you should talk to her and tell her…everything. She is your girlfriend. She has a right to decide too. What if she agrees with you?.What if she wants to be with you no matter what?. This is the Schrödinger´s cat all over again Sheldon. If you talk to her maybe you will find out if the cat is either alive or dead. But if you don´t talk to her you may find out the cat is definitely dead. She might finish it Sheldon. You don´t want that, do you?

Sheldon rolled his eyes at her, more like his usual self—"Why on earth are you all so sure that Amy is going to leave me?. I may not be the boyfriend of the year but I am not that horrible, I am sure"—he hesitated slightly—"am I?"—His face went so fast from self confidence to panic that Penny almost laughed but she bit her lips.

-"ohh, sweetie, you definitely are not a horrible boyfriend…well, maybe not for Amy, anyway"—Sheldon glared at her and set his jaw—"oh, come on, you know what I mean, you understand each other, you like each other, you are so similar… I mean, you are the same species, aren´t you?—She smiled cheekily at him.

Sheldon rolled his eyes at her words—"I have already said in multiple occasions how similar we are, no need to be redundant"—He sighed deeply—"but back to my petition I suppose you are declining helping me?"—his eyes were pleading —"I am ashamed and confused Penny and I don´t like feeling this way, I don´t want see Amy, didn´t you hear what I just told you about my animal hind brain being in control?".

Penny smiled to him tenderly—"Yes I heard you Sheldon Cooper, and I am so happy for you and for Amy"—

He looked at her with wide eyes, as if she suddenly had sprouted a second head and Penny kept going—"honey, you are always so afraid of change and chaos, but some of the greatest experiences in life contain a lot of change and chaos, and it makes them so damn good!. You can be safe and comfortable following your programs and schedules and you can think you are happy, but time keeps going on Sheldon, and I am afraid that one day you are going to wake up and find out you left pass your opportunities for real happiness just because you were too afraid of change, and too comfortable in your little nest"—Penny sighed loudly—"listen, I know for sure Amy has strong feelings for you. I know she shared most of your thoughts and she finds you and your quirkiness cute. But she has changed Sheldon, she wishes and deserves an adult relationship, someone who loves her, who cares about her, someone who wants her, completely. She is a wonderful gal. I don´t like to see her crying. She was really upset yesterday"—She raised a hand to stop Sheldon from talking—"you said you don´t want to hurt her, but you are doing it just now. Your silence is hurting her. She needs to know how you feel…you need to tell her".

Sheldon fidgeted uncomfortably-"but Penny, I am not ready for this, I feel lost. The uncertainty of the different outcomes makes me shudder"—He fidgeted even more and started to blink—"Let´s suppose, I mean, just suppose, that I confess this to Amy and that she is amenable to start a physical relationship. We would have to make amendments to our relationship agreement and set up a date and place for this to take place"—he gulped audible—"but then, what will happen when we finally get there Penny. I have never done anything like that. I mean, we both are inexperienced but I have to remind you that she has participated in an experiment designed to electrically stimulate her brain and she has had 128 orgasms!. I mean"—He looked into Penny´s eyes with an anguished look—"what if I she compares and comes to the conclusion that she has better attach some electrodes to her head than being with me again?"—He looked positively deranged now.

Penny had to bit her lips hard not to laugh this time—men, geniuses or dump as soup, they are all the same, so worried about their performance—She mentally counted up to ten, just to be sure her voice didn´t betray her amusement—"Well, Sheldon, not everything about sex is physicall. For most of women feelings are more important than…ability… you got me, don´t you?"—she winked at him.

-"Really? Penny…I mean, really?"—Sheldon scuffed—"We both know I am even worst at feelings than at… getting physical".

-"ughhh Sheldon!—Penny rolled her eyes at him, her patiente fading slightly—"Look I am trying to be good, okay? But you are making this so difficult, as usual"—she sighed deeply again—"let me tell you something you, physical contact disabled"—She raised an eyebrow to him, so he could understand she was being sarcastic.

Penny sighed -"I shouldn´t be telling you this, but since I want you to be with Amy before you could have grandchildren instead of sons I will do it. Amy enjoyed your little encounter more than you could suppose…Well, the making out part I mean, not the "Sheldon being a jerk" part. In fact, she was a little angry about the jerk part, but she felt as overwhelmed as you did—she scooted forward, meeting his wide eyes—"Maybe you should ask her if she would like to repeat the experience or even go further. There is nothing wrong about showing your girlfriend that you want her. I mean she is not going to stay a virgin forever cowboy. Are you going to risk to lose her to a smarter guy some other day?"—He jumped on his seat and averted his eyes, clenching his jaw at this comment—"Remember what I told you about that guy I didn´t confess my feelings to. Fortunately for me I could make things right and I am very happy now, but the time I was without him and when I thought I had lost him I was in real hell. I don´t want you to be in that place"—She dabbed her face with her hands and stood up pointing at him accusingly—"I didn´t say anything, okay?, if you say something to Amy I will go all junior rodeo over you, be warned"—She pointed to his crotch and he instinctively closed his legs and turned his body slightly.

As her words sank in, Sheldon felt flushed and the now familiar hot sensation engulfed him—Amy enjoyed it?—That thought was certainly empowering. Maybe he could excel at this too. Maybe he just would have to let his instincts guide him in this and everything would be just fine. After all he was a man and thousands of years of evolution were encrypted in his DNA. He shook this thought and stood up, pacing slowly. He felt overwhelmed, too many things to think about. He needed to be alone.

-"Well, thank you Penny, you have helped me a lot..who would have thought?"—She glared at him and he made his breathy laugh—"just a little bazzinga. I appreciate for you to listen to me and would like to remind you about our pinky swear"—He sighed—"I must think through all this and have a good sleep".

Penny sighed and walked him to her door—"just don´t take too much time thinking Sheldon. You need to talk to Amy if you still want to have a girlfriend"—She smiled at him and closed the door on his face.

A/N: Okay, next chap will come very soon, actually I have already finished the story but I hope my beta reader could check them out, I suppose she is very busy at the time, so if you found any mistakes those are on me totally, remember, mi first language is not English.

Thanks for reading, I hope you send me a review it is always lovely.