Doctor Who Season Past experiences say that it is most likely that Leonard would be the one do something to impact their wedding, but that was not the case. En route to Vegas, Leonard, admitted to Penny that he cheated on her. They could try being together and not tell their friends until they know it is working. However, this does not mean that Penny met him half way. In order to ensure that these problems do not continue, they agree to provide each other "bug reports" of their relationship.
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The Recombination Hypothesis
While this makes Leonard an admirable friend, it leaves one question unanswered - is this not weird for him since they used to be together? Thankfully she forgave him before they finally got married. She has shown her intelligence multiple times, and in different ways. During season seven, Penny decides to take a big leap in to her acting career, and quits her job at The Cheesecake Factory. The first scene is a salute to the original pilot where Leonard and Sheldon climb the stairs wearing similar outfits and they spot Penny through her apartment door wearing the same shirt from the pilot. Leonard must think about this from time to time now that they are married, but would he go through it again? Season 1 " Pilot ".