Leo knocked once on Amy's door, and then waited. After a couple seconds, he knocked once again. His forehead creases in confusion, and he knocks one more time. The door opens, and Amy appears, hungover and tired but recognizable.

Leo smiles at her and asks, "May I come in?" Amy nods and Leo enters before asking, "Why didn't you answer when I knocked the first time?"

Amy shrugged and said, "I'm still use to only Sheldon coming over, so I expected the 'Amy Amy, Amy thing' that's common with his OCD."Leo just then noticed Amy putting down a baseball bat and smiled. "Ah Amy, you are as funny as you are beautiful." Amy blushed and Leo noticed something. "Wait, Sheldon doesn't have OCD." Amy laughed and took Leo's hand, leading him to her room while answering, "Maybe not, but what grabs your attention?"

As they disappeared and Leo closed the door he replied, "Well I kinda have to refresh my memory..."

The gang's hangover had gone away by the time Leo had left, and was talking about their night when Sheldon came from his room. "I need all your assistance."

Howard looked shocked. "You're kidding, you actually want an-only-an-engineers help?"

Sheldon twitched, but otherwise he shrugged. "Well, you do have your 'useful' moments, and it can be useful in helping me get this bracelet off."

Leonard smiled and was about to say something but Howard cut him off. "So, me, a guy who doesn't possess a Doctorate, somehow knows more than the Great Sheldon Cooper?" Again, there was mock surprise, which Sheldon clearly heard.

"I think we both know you don't have a Doctorate because you simply do not have the capacity for such remembrance, or because you are a stubborn, short, unkind man, who would leave a desperate fellow with his own quarrels instead of use his limited but still relevant knowledge. Do I actually need what you, Howard Wolowitz knows, no I do not. What I do need however, if for you to get me an Oxi-Acetylene torch so I can burn this cursed gadget off."

"Gizmo."Raj corrected.

"What's that?"

"It's a gizmo."

"No, it is not Raj. Your field of study is in the stars, I suggest you don't deal with Earth topics, and instead focus on whatever gizmos allow you reach stars that are not 92,800,000 miles away."

"And I suggest you Sheldon Cooper, my tall, lanky friend, deal with your theories seeing as everything you utter including facts that are in my field, are both incorrect, and unproven seeing as the Sun tilts and varies in which pole is facing the Earth during different seasons."

Sheldon sighed. "I see how this is going to go..."He continued,

"A gizmo, my fellow but easy-to-tell illiterate Indian, is a gadget that actually rarely helps, because it is either theoretical or experimental and has not really been used before. I just bought this bracelet yesterday, and was merely testing out."

"Sheldon, it's a gizmo."Raj countered, and Sheldon bowed his head, clasped his hands behind his back, and walked forward.

"Explain to me then, why this is a gizmo."

"Because it doesn't work! So it's not actually assisting you yet, so that makes it a gizmo..."

Sheldon stared at Raj, and was about to counter when Penny interjected, "Oh who cares?!"

"Well, it seems someone had an unfulfilling intimate encounter." Sheldon said, and Penny stood up. "You're a lanky lowlife!" She left, slamming the door very loudly. Leonard just stared at Sheldon's computer.
"What the hell just happened?" Raj asked, and Sheldon and Howard didn't know the answer.
"Ask Leonard, he seems to be the one who can't keep a girl in the room..."Howard had meant the comment as a joke, but Leonard stood up just as abruptly as Penny, and walked out the door before slamming it also. All of them flinched, and Sheldon said, "Hmmm, if only he was that expressive with his work, I might actually see why he loves what he does."
They all snickered, and Howard gave in. "FIne, I'll help you Sheldon, but on one condition: You stop acting like a douche, and I make sure you don't burn your arm off."
Sheldon snorted. "That's two conditions."
"No, I always want you to stop being a douche. But I do worry that you will burn off your arm..." "And then make us have to take care of you like when you get sick."Howard also thought, remembering the Planet of the Apes Marathon and how he and Koothrappali totally screwed over Leonard with their faulty equipment. Oh good times.
Sheldon, oblivious to Howard's quick recall of the "good times" nodded and inquired, "When will we leave?"
Raj said, "As soon as you want."and Howard nodded. Sheldon smiled and then tugged at the bracelet. "Let's hurry, this thing is itching me like poison Ivy on Caffeine." To emphasize the point, he scratched at the bracelet, and then didn't stop scratching. Afraid that Sheldon would scratch his own skin off, Howard and Raj practically pulled him out the door in such a manner that Sheldon abandoned his itching to exclaim his discomfort. As they went down the stairs, Raj vaguely noted raised voices.
They belonged to Leonard and Penny.
"Okay, maybe I was out of line asking during sex, but come on Penny! I love you, and you know it. I'm crazy about you, and you know it. What is there to be afraid of?"
Leonard was standing near Penny's bedroom, whereas Penny was also standing, but near the couch. She was crying, so her next words were kind of rambled.
"You have such a bright future ahead of you Leonard, and think of it. Would your parents really let you marry me, a community college drop-out with no career. Even if by some Harry Potter magic you were able to convince them...I don't feel worthy to marry you Leonard. You're great, better then great, the best, most kind guy I've ever met. And, I can't do that to you."
Leonard was about to retort when he just stopped. The fight went out of him. He instead started to say, "Penny I'd never be a-"but was interrupted when Penny said, "I'm moving back to Nebraska."
Leonard's heart stopped a moment, and he could only repeat, "You're moving back to Nebraska?"
Penny nodded, holding her arm even though she hadn't hurt it. Leonard just shook his head. "I-I don't understand I mean you say you love me, and now you're leaving?"
Penny started to cry again, and Leonard found himself biting his lip to keep from crying too. Penny's face told him she meant, not unlike the time when she had said she was moving back after she'd "slept" with his friend Raj. Leonard crossed over to Penny and looked at her eyes, resting his hands on her shoulders. "Please stay Penny. You don't have to marry me, but please don't leave."
Penny gave him a small, sad smile and said, "Do the math for once Leonard. In the end, we always reach the same conclusion, I can't be with you, unless I eventually marry you." Penny then dropped the bombshell. "And I don't want to marry you."
Leonard stepped back, his face hard, and his arms limp at his sides. "You...don't love me?"
Penny shook her head furiously. "No that's not what-"
"Then why not marry me!?"Leonard was grabbing at his hair. "I mean, what else do human beings marry for? You can get a girlfriend to have intercourse with, you can get a business to make money, but what do you need for marriage to work if not love? For once in your uneducated life Penny, give me an answer that makes sense? What are you afraid of?!"Leonard's fury came out before he could regulate it, and a dark shadow crept over Penny.
"That's the thing Leonard. I am uneducated. I don't have the answer to give you, because I don't care for the problem. I'm not marrying you...I refuse your proposal."
Leonard nodded, and then backed away. "Fine." He started towards the door and Penny started after him when he whirled around and kissed her. It was a lingering kiss, and as soon as it finished, Leonard looked at Penny's eyes. And what he saw crushed him:
There was no reaction...
He gazed at her and then whispered, "Tell the others I said good-bye."
Penny reached for Leonard. "Leonard please don't-"
He knocked away her hands. "Don't okay. I can't keep doing this. Loving you, you loving me. We break up, get back together, break-up, and then finally get back together. And then, you claim you don't love me anymore...I've got to go. Tell your family I said hi."
Leonard left, his sobs audible from the door, but quickly fading. Penny's tears started anew, and she sank into the couch before tucking her feet under her. She remembered the night before today at the hotel, her and him together. She had looked at his face when he'd slept, and it was at ease. She knew that look, it was peace, and she didn't want to put that off anymore. She had to tell him her answer, and so she had. She'd submitted her paper to the professor, except this professor loved her. Penny felt she had learned so much with Leonard, and gained so much of what he had to teach her. And now, the professor had resigned, and she hoped he'd be okay...Still crying, she began to pack her things."

-I did me best to make the chapter sad: Some sitcoms should have a little drama, because while I'm going to give two more chapters to this episode, the next one is a sure guarantee to be a wild ride, I promise. Thank you for the reviews, I treasure them because it means people actually take time to view what I have to express, and that is better than any check I could ever get. Sleep safe, and read long- LLL