In the last series of Season 4 "The Big Bang Theory" Leonard was a witness of how Penny came out with the shame of her bedroom, where she spent the night with Raj after violent drunkenness. Of course, they are unlikely to become a couple after that, but this event definitely will make the complexity of the relationship of Leonard and Penny in the fifth season, which will be released this fall.
"At the end of each season we try to introduce some fresh twist. We really like to do this, especially the part where Leonard and Penny are complicated",- said the chief producer of the show, Bill Prady in an interview with Award Ceremony "Critics' Choice Television Awards", where Jim Parsons aka Sheldon won the nomination "The best comedian."
"We are working on unraveling this whole mess."
In addition, although Leonard in the final season and was on the verge of breaking up with his Indian girlfriend Priey, next year they decide to keep all that remains of their relationship, even though thousands of miles separating them.
"We decided to give Leonard a chance to try his hand in the relationship at a distance from Priey, for this would be pretty funny to watch," - said Prado. In addition, Penny has finally admitted that she still has feelings for ex-boyfriend". "As a result, we have Leonard and two women, but no sex" - laughing Prado.
How sadly, this situation looks like, but the positives still there. Romantic feelings will go by the wayside, and the creators of the series will be able to return to the good old stories from the life of nerds.