TBBT is in its final season :-( How could it end?
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Leonard and Sheldon came out of 4A, as they locked the door behind them they saw their neighbour walking up the stairs.
"Hello Louie"
"Hi guys, a tough night on duty. I want to get my nightdress on and get some sleep."
"OK, we are off to Caltech, see you later."
As they walked down stairs Leonard told Sheldon about his dream the previous night.
"Louie moved out and this pretty young lady moved in across the hall. She changed our lives, I eventually married our new neighbour and the rest of our group got married, even you Sheldon. Howard became a father of two children."
"Sounds preposterous Leonard."
"Oh I agree, I should stop eating spicy food before I go to bed..."