Author's Note: This story is just going to be a collection of drabbles.

Disclaimer: I do not own TBBT or 'I miss you'. That belongs to Blink 182

"Don't waste you time on me, you're already the voice inside my head
(I miss you)"

Blink 182

She had left.

After their breakup, she left 4A and her nerdy geniuses by themselves wondering just what exactly happened between Leonard and Penny. Since entering in a relationship six months prior, Sheldon and the others were...on edge so to say. To Sheldon, their relationship was a sham. To Howard, he wanted to get into her pants and was upset that Leonard beat him to it. To Raj, he sat silently in the corner where he saw the looks of pride from Leonard, the odd looks from Sheldon, and then the unreadable expression of Penny.

Sheldon had done all he could to make sure Penny stayed out of his way, out of his hair, and as far from him as possible. He tried conditioning her with chocolate, a feat that Leonard had put his foot down on. He taunted her on her lack of education and lack of success on her dream of being an actress. But oddly enough, he found himself being the one who Penny turned to when Leonard and her's relationship would shake. Sheldon was beyond an explaination for it, after all he was horrible at comforting people. Everyone knew that and it was an unspoken rule that you were probably better off speaking to Howard Wolowitz than Sheldon Cooper.

But when she had left, she took everything with her. There went the competition on Halo nights, there went the arguements on Thai night, there went the unwelcome visits early in the morning when she wanted milk for her coffee and tried to take it from him, there went her retorts to Howard's statements. There was yet another change to his routine and he wasn't comfortable with it. No one sat in her spot on the couch, no one wanted to try to take her place. Glancing out of the corner of his eyes, he saw the vacated spot on the couch and his stomach gave a lurch. His bright blue eyes widened as he dropped his food and walked into his room, shutting the door as Leonard began to question him.

Why did he feel like his heart was broken? Why did it feel like the sunshine was gone? Why did he feel like this since her disappearance? Sheldon had no idea and took to jotting it down in his social interaction journal before rushing back out. He was on a mission, he wanted to correct the mistake at hand. Rapidly approaching 4B, he paused before putting his knuckle up to the door.

*Knock Knock Knock*

"Penny!"

*Knock Knock Knock*

"Penny!"

*Knock Knock Knock*

"Penny!"

After his signature knock, he waited for her to open the door but all was silent. A unfamiliar panic coursed through him. Once more his routine was disrupted. It flashed in his head that it was infact that Saturday, which was laundry day for the both of them. Returning to his apartment, he grabbed clothes and headed downstairs. Since her disappearance, he couldn't sleep and he wasn't handling disruptions to his sleep schedule. But as he entered the laundry room, he saw no sign of Penny. His mind flashed to a week ago when he saw her here, shortly after a fight with Leonard. The pain he felt then when she left their apartment compared to the pain he felt now.

Penny was on the floor crumpled up, hair disheveled and make up running. Sheldon didn't know much about body language and some would even argue that he wouldn't be able to tell body language if it were to save him and the fate of the whole world, but he knew that it pained him to see her in such disarray. "Penny" he said as he clenched and unclenched his hands nervously.

She turned and smiled sadly at the tall genius that was approaching her. "Hi Sheldon" she said. "I believe that it is social convention to ask another why they are upset when they are a crumpled mess on the floor" he said uncomfortably as he seperated his clothes and put them in his washer machines. After the incident where a new person moved into the apartments and didn't know the rule of 'Saturday nights is Sheldon Cooper's laundry nights so avoid being in the laundry room' and used his laundry machines. It ended in him ranting and raving madly about germs and bacteria to the point where that person seemed to vanish off the face of the planet.

A sorrowful chuckle met his ears as he glanced down at her. "You know it is very unbecoming of you to sit in a heap on the floor when you know that it is so riddled with germs" he said and Penny sighed. "Yeah...I know" she said. Sheldon rose an eyebrow, not expecting that to come out of her mouth and he found himself strangely missing the spark inside of her that had her fighting with him. "It is also in my knowledge to know that, as a social convention, I am to ask you what is bothering you" said Sheldon as his wash began.

"It isn't something you'd like to be concerning yourself with" she said sadly. Sheldon gave her a look and she sighed, knowing that Sheldon Cooper did not give up. "I came to a realization Sheldon" she said. "That your dreams are futile and you would do so much better to go back to college?" he asked earnestly. She glared at him and he took a step back, covering his most sensitive part of his body as he did so. "I came to a realization that I have fallen in love with someone that I should never have! He is arrogant, annoying, he lacks social grace, he always puts me down, and he doesn't let anyone interrupt his plans" she said as she wiped her tears, knowing that though Sheldon was smart, he would never really put two and two together.

He stood there, shifting his weight from one foot to the other and flexing his fingers. She smiled at his twitches, his nervous tweaks. "Penny...I am hardly one to come to on matters such as these" Sheldon said. "Yeah, I know" she said as she wiped her eyes. His heart dropped at the sight of her tears. He couldn't stand to see her like this, but why? "There is a question I must ask you though Penny, as it isn't something in my vast knowledge" he said to her as she rose to her feet. "What is bothering you Sweetie?" she asked.

"Why does it feel like my heart has been ripped out? It is like a massive black whole is swollowing up every last happy emotion and thought into its murky depths and I find myself strangely cold. I know my core temperature is not dropping, that I am not sick but..." he started but she placed a finger to his lips softly. His eyes widened as her skin came in contact with his lips and jerked away. "That is hardly sanitary! Do you know how many germs you carry on your hands?" Sheldon cried incredulously. Penny chuckled and shook her head. "You miss someone Sheldon. That's why you feel like you do. You miss someone that has become a part of your life to the point where their disappearance is making you feel cold when you aren't Sweetie" she explained.

He tilted his head, a sign of his confusion. She chuckled. "I suppose your MeeMaw misses you too. Perhaps you should try writing to her?" said Penny as she dusted herself off. She looked away as his face began to twitch and when she turned back around he was composed. "Well...good night Sheldon" she said as she walked up the stairs, pausing to turn around and briefly staring at him. "...and thank you". Sheldon watched as she left and stared back at his clothes.

He missed her

Sheldon Lee Cooper missed his annoying, blonde neighbor Penny

Author's Note: Thank you for reading!