VI.

"I'm so sorry, Sheldon, please don't leave me."

He was furious, don't leave her? She drugged him! He wasn't some lab rat, or one of her monkey's that she could just dose with drugs whenever she saw fit. What she did was unethical, illegal, and down right rude! He had the right mind to get her fired, and incarcerated. He glared at her from the threshold of his bedroom, "Don't leave you? Amy, I know your judgement must have lapsed since you drugged me, but surely you do understand that this gives me great cause to leave you!" He said viciously, "And I am. I don't trust you at all to be near my person, and that isn't a great foundation for a relationship. Clearly you aren't satisfied with me either, so let's call this what it is, and leave."

Amy frowned deeply, "Or is it because I'm not blonde and my name isn't Penny?"

He felt his teeth bare at the sound of her name, and his blood started to pump quicker. All of a sudden, he could smell her, even though she was across the hall and there was no way he could actually smell her. He could feel her, and taste her, and he needed her. He fidgeted and his grip tightened on his door, "Leave, Amy."

She noticed the difference in his body, and her heart broke slightly. She didn't want to believe her Bestie and boyfriend…well, ex-boyfriend, were involved with each other, but the way she saw him react at just the mention of her name she knew she deserved this. She did do this to herself, her life and her relationship were fine before she decided to drug him. Yes, the relationship was slow-moving, but she was fine living in blissful ignorance to her friends' feelings. But now, now it was the only thing she could think about.

"Penny knows."

She saw his knuckles turn white, "She knows I drugged you. She knows the only way to save you from yourself is to have sex with you until the need is out of your system. I also know you guys had sex once already," she looked up at him, "It's all over your face, whenever I mention her name you get so tense. I wish you looked at me like that."

He didn't speak. Too afraid to trust his own voice. She only sighed and nodded her head, "Goodbye, Sheldon."

He was glad Leonard had taken the weekend to be with Leslie Winkle, despite how much he hated the harpy he needed to be alone for a while. He didn't trust himself enough to leave the apartment because he knew the moment he stepped out into the hallway, he'd smell her, and he would break down the damn door just to get to her. But he didn't want to hurt her, he didn't want to ruin their friendship more than he already had. Just the thought of being inside of her again was enough for him to tighten his fists, his short nails digging so deep into his skin it started drawing blood.

He tried everything he could to prevent himself from forcing himself into her apartment. Cold showers were the start of it, and it started to work, but shortly after it stopped, and he realizes it's probably because Amy had dosed him again, and the serum got even stronger. He was reduced to self-pleasure, and it wasn't easy to do it knowing his roommate was just a wall away, but he had to. His mind was being consumed by her, and he needed a release. And it worked. Until he had sex with her, now nothing was enough. He wanted more, he needed more. But he couldn't do it, because she was dating Brandon, and she was his friend.

He scowled at the thought of her boyfriend. He wanted nothing more than to keep her in her apartment, tied up, and prevent her from going on her date that night he came to pick her up. He knew he couldn't do that though, so he settled on giving her a mind-numbing kiss, and he knew it worked because much to his chagrin she was going on a romantic getaway with him to his family's lake house, and it ruined his entire weekend. He couldn't see her, touch her, smell her, it was like she was gone, and he hated it. He was angry all weekend, and he didn't want to see any of his friends. She was his, and she was gone.

He closed his eyes tightly, his erection straining against his pants. He groaned as he let a large hand rub against it over his pants. He couldn't masturbate, it would only make his desires worse. But it was like his mind had another idea, and his hand started snaking into his pants, gripping his hardened length in a closed fist, stroking it as his mind went to places that smelled of apple. Her chest, and her ass, her lips, oh god her lips, and the wondrous things that they did to him. His hand moved quicker, and his breaths got ragged.

"Fuck, Penny."

He could feel her, and he could smell her. His eyes shot open once he heard the door to 4A open, and his hand let go of his erection that was standing boldly on display. She was in his apartment, and his body was on alert at how she was slowly approaching his bedroom. He heard her soft knock.

"Sheldon?"

"Go away, Penny."

It hurt him to say it, but he needed her to go. He was holding himself back from opening his door and having his way with her. He quickly zipped up his pants and backed up to the corner of his room. He heard her let out a breath and start to twist his door knob.

"Penny, no!" He roared a lot louder than he thought he could, and he heard her gasp and the door stop.

But then it opened widely, she stood there in nothing but a flimsy tank top and shorts, and he had to grip the edge of his desk because she had to know what she was doing to him and it wasn't fair, because he was trying so damn hard to be the good guy but whatever Amy put in his body was telling him –yelling at him, take her! Make her yours! She is yours! Take her now! His throat produced a low growling noise and he felt his penis standing painfully.

"Sheldon…I know," she said softly. Her voice did nothing to help the matter.

He shook his head, "I don't want to hurt you, Penny, please, leave."

"You won't hurt me, Sheldon. I…I want this. I want to help you."

He watched as she slowly started to remove her shirt, "Please, let me help you, Sheldon. I don't want to see you in pain anymore," she threw the shirt over her head and to the ground. His eyes never once left her own and she felt like it was best she held his eye contact, that way she would be prepared for whatever movement he made.

She reached behind her and closed his door, locking it in the process.

His Adams apple bobbed as he swallowed heavily, "Penny, you don't understand what's wrong with me."

"I do, Sweetie, in human speak you're just extremely horny right now."

"I'm craving you, Penny," his eyes burned deeply into her own, trying to convey exactly how he felt towards her, a part of him trying to scare her away, "Every part of my body is burning for you, and it won't be sedated until I have you beneath me, withering and screaming my name," he closed his eyes and exhaled, a small smirk playing on his lips, "I could hear it when I close my eyes," he looked at her again, "I hear you screaming my name, and I can feel your nails in my back, your legs around my waist," he stepped closer to her experimentally, "I can smell you," he stated.

Penny felt her knees begin to weaken just at the sound of his voice. Never did she think Sheldon Cooper of all people would talk dirty to her, and it was doing wonders to her arousal.

"Then, then let's do it," she hooked her fingers around her shorts and pulled them down. His breath hitched in his throat, noticing she hadn't been wearing underwear or a bra. His normally blue eyes turned dark, and his drawl came out as he spoke in a husky voice, "Penny, are you sure? What about Brandon?" He growled his name.

She frowned, her eyes looking towards the ground, "I called him after that night we had," she sighed, "I never cheated on anybody, and I felt so fucking terrible Sheldon," she looked at him, "I never blamed you. I know I played an equal part in this, and honestly, I don't regret it. But I told him because I felt so guilty. He said he was disappointed but not surprised, he saw the way you were looking at me when he came to get me. He said, he said he knew from the way you were looking at me that he was running a race you already won. He said he knew I was already yours," she looked up at him, "We broke up right after."

"You're single?"

She nodded, and before she could speak, she felt herself being pressed up against. Sheldon had crossed the bedroom, taking her in his arms and was holding her so tightly she was positive she would have bruises. "I want you to understand what you're telling me, do you understand?" it was a warning and she could hear it in his voice.

She locked eyes with him, and only nodded slowly, "I understand."

Everything else moved in a blur.

All she felt was Sheldon, all of him. She didn't know what she expected from him or having sex with him, but it wasn't romantic. It was primal. One moment she was pressed up against his door, and the next she was on her back, breathing heavily as he pushed himself inside of her.

She could feel him inside of her stomach as he lifted her legs and pushed into her deeper. She moaned as she gripped the sheets on his bed and her head lolled back, she arched her back and wrapped her legs around his waist "Fuck Sheldon!" The only thing that could be heard was the sound of their skin connecting, and the loudness of her moans.

Her body felt alive, and her skin felt like it was on fire. She felt herself getting lost in him, and only a small part of her couldn't wrap her mind around the fact she was having sex with her crazy neighbor, but the pleasure was too much, and she didn't dare stop him.

He buried his face into her neck, his thrusts not slowing, and she felt him licking and sucking on her neck unapologetically. She knew there would be a large vibrant mark there when he was done, but she didn't care. She knew he was marking her. In his mind, she was good as his and that was the end of it. She found she didn't mind that at all. Something inside of her tingled at the thought of belonging to Sheldon Cooper.

She cried out as he pushed into her at an angle, and she felt his moves becoming erratic. She knew he was about to cum, and she tightened her grip on his back and desperately tried to keep up with his pace, as he buried himself into her and let himself come undone.

She breathed heavily, attempting to catch her breath, she let her legs close, "Wow."

She didn't know what she expected after having sex with him, but it wasn't to hear him growl in her ear, to feel him peeling her legs open, and to feel his hardened length against her sensitive core again. She gasped when she felt him pushing into her again.

That's when she remembered Amy said he needed to get it out of his system. That could last all night.

And it did.

The change was almost instant, and it scared her slightly. Sheldon had gone from primitive primate to anal physicist within a blink of an eye, and now she sat on the side of his bed knees weakened, heart racing, and hair a mess, not to mention awkwardly – she didn't know what to do or say, and he wasn't saying anything either.

"I—I'm going to go," she stood to her feet, wrapping his white sheet around her body, in attempt to keep whatever modesty she had left. She looked down at her feet, her clothes were shredded, and she couldn't even attempt to put them back on. Somewhere in between the fourth and fifth round, she said she had to go to the bathroom and tried to put her clothes back on, but he ripped them off of her and told her to go naked. She obliged. She regretted that now, because she would have to do the walk of shame wrapped in a sheet.

She sighed, "I'm glad I could help you out, Sheldon. Don't worry, I won't mention this again."

She moved to the door but stopped once she felt his eyes shift towards her, "Penny."

She didn't know why she stopped or even what she expected, but she listened with her heart in her throat.

"I don't want you to leave."

She looked at him.

"I know for the past week and few days I've been under a drug induced state, and parts of my brain were being used at large…but, I was always somehow aware of what was going on," he looked away, "No. I couldn't control myself, despite how hard I tried. Especially when manhandling you, I really am sorry for that, but I did know how I felt and how real it was. In a way that serum helped me do and say things I wouldn't have said otherwise."

"What are you saying, Sheldon?"

He looked at her, "I don't know if this meant anything to you, Penny. I don't know if the last seven hours meant anything to you, but I know for me the last seven hours meant everything. It was my first-time having sex," he exhaled, "And though a lot of it was under the influence, I remember it, and I remember the way you made me feel, and the way I made you feel. And…and, I want to feel it again," he took her hand tentatively, "I want to make you feel it again."

She was shocked.

"I know I won't be the way I was a few days ago, I won't be like the meathead guys you date. I'm not like them, but I do suppose some underlying part of me always considered you mine, and I know you're not a piece of property and I know I don't own you. But I feel like on my heart, in a bold pink script is your name, and I don't want to get rid of it."

She didn't know she was crying until a tear hit her arm, but she felt herself nodding.

"This meant everything to me too, Sheldon. I feel the same way. I have for some time now, but I didn't think you would ever feel the same."

He just chuckled, "I wouldn't tolerate you so, if I didn't feel the same way."

She dropped the sheets in the process of walking over to him, and saw him blushing, "It's nothing you haven't seen before," she teased as she hugged him tightly. Their naked bodies pressing against each other. She felt him tentatively place his arms around her, and she exhaled deeply, content.

"I guess we should thank Amy."

"Why, Sweetie?"

"For the experiment she performed on me, it brought us together."

She shook her head slightly, "Maybe not. It'll be too early for her to accept us being together, we don't want to push it in her face."

He nodded in agreement, "I agree," he looked down at her, "In the meantime can we try kissing again?"

She grinned and leaned up to him, kissing him deeply.

This is the last chapter! But after reading over some of my stories, I realized this story could fit as the prologue to my two shot Anything Could Happen. So look at that, full circle!