One thing is clear though: Cuoco and Galecki remained good friends following the end of their relationship, which certainly made working together easier.
Cuoco recently appeared on Dax Shepard’s Armchair Expert podcast, where she opened up about her theory regarding Leonard and Penny’s later sex scenes. Cuoco said:
When we broke up obviously it was a little sensitive for a minute. But I remember those weeks that Chuck had written these episodes where all of a sudden our characters were like sleeping together every other second.
Johnny and I talk about it and I think [Chuck] did that on purpose — just to f**k with us. If I was with him, I would ask him because that came out of nowhere. All of a sudden these characters were all up on each other.
Fans were delighted when Penny and Leonard got married, and some might even hope Young Sheldon will find a way to reference where they ended up. After all, the most recent episode of the Big Bang Theory spin-off revealed something about Sheldon’s son with Amy Farrah Fowler (Mayim Bialik), so perhaps Leonard and Penny will get a shout out. Fans should keep their eyes peeled in the future.