Kaley Cuoco & Johnny Galecki Help Celebrate ‘The Big Bang Theory’s’ 100th Episode [PHOTOS]
“We’ve been watching over this year how in small ways the relationship was talking at them,” executive producer Chuck Lorre told TVLine of Penny and Leonard’s relationship. “The friendship is going well, but then we throw in a moment where she was drunk and [said] she regretted breaking up with him. So, although it is a little risky, it felt like the right thing to do, to explore Leonard and Penny again in the 100th episode.”
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