Kaley Cuoco questions Johnny Galecki's account of their quirky off-screen romance on the set of The Big Bang Theory.

The Big Bang Theory's Penny and Leonard had a spark, but did Kaley Cuoco and Johnny Galecki's love story start with a bug or a strategically placed towel? Their playful he-said-she-said about a steamy shower story has fans buzzing! While Galecki revealed a rather interesting version of their off-screen romance, Cuoco completely disagreed with her version of the story.

This memory mash-up adds a sweet layer to their romance, reminding us that even Hollywood love stories aren't scripted to perfection.

Remember Leonard and Penny's adorable will-they-won't-they on The Big Bang Theory? Well, it turns out that the real-life love story between actors Johnny Galecki and Kaley Cuoco had its own quirky beginning, and they can't quite agree on how it all came about.