This story follows on from 5.03 "The Pulled Groin Extrapolation" with a slightly different ending. Everything belongs to Lorre and Prady.

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Amy has just helped Leonard up the stairs after they attended the wedding celebration together.

Leonard: "Want to come in, have a cup of tea?"

Amy: "No, thanks. I'm gonna head home."

Leonard: "Okay. Well, good night."

Leonard kissed Amy on the cheek but then Amy kissed Leonard on the lips.

Amy: "Thank you Leonard, this was fun, we should do it again sometime."

Amy then walked down the stairs with a big smile on her face, not knowing that Sheldon had seen everything!

Leonard: "Ow! Why did you do that?"

Sheldon: "To send a message. She is not for you."

Leonard: "What?"

Sheldon: "Not for you!"