Leonard and Penny, characters from The Big Bang Theory, are portrayed on the show by Johnny Galecki and Kaley Cuoco, respectively. They play a significant role in the progression of the plot of the show. Their relationship was dynamic and progressed through many stages, and they broke up in season 4. Both took a new start again in season 5.
Leonard Confessed He cheated on Penny.
In “The Good Guy Fluctuation,” the seventh episode of the fifth season of “The Big Bang Theory,” Leonard finally admits that he cheated on Penny. Because the romantic relationship between both was an audience favourite, this was the biggest cheat storyline of the show. Leonard’s feelings about penny were never strong; he constantly worried she would cheat on him. This insecurity was evident that penny was more good-looking than Leonard. Despite his mistrust of Penny, Leonard ended up being the one who acted dishonestly by betraying Penny and kissing Mandy Chow while he was on a voyage to the North Sea.
Bernadette knew Leonard’s cheating secret.
Following Leonard’s admittance, he betrayed Penny’s trust and cheated on her in this relationship. Penny experienced an emotional breakdown and vented her frustrations about the situation to her friends. Bernadette’s revelation that she had been aware of Leonardo’s infidelity for two years made Leonardo’s betrayal less devastating. Bernadette was aware that Leonard was not trying to act loyally toward her friend Penny, but she never brought this up in conversation with Penny. Although Bernadette was Penny’s best friend on the show, she continued to hide this information, and viewers believed she had no right to act this way.