They felt that the scene was affected by their real problems.

One of the factors that contributed to the authenticity of the love story between Leonard and Penny was the off-screen bond that Kaley Cuoco and Johnny Galecki shared. Although the two broke up after dating for a short period, the duo didn't let it hinder their on-screen chemistry and have continued to maintain a special bond outside of The Big Bang Theory.

But a scene after their split on the sitcom brought Cuoco to tears, as the cast believed the decision was influenced by their own personal issues outside of the show.

One of the main factors that contributed to the breakdown of their relationship was Johnny Galecki's privacy policy, as he did not want their bond to be public. However, it wasn't because of the actor's personal issues but because he didn't want to undermine Penny and Leonard's on-screen bond by taking away from the audience's focus.