Are you ready for a huge spoiler for The Big Bang Theory ... In their description of the Valentine’s Day episode, TV Guide reports, “Leonard and Penny’s relationship will hit another ...

In The Big Bang Theory, fans got to know the couple of Penny and Leonard (Johnny Galecki), who ended up happily married after a long relationship that, like any real-life one, had its ups and downs.

A character that would have replaced Penny in a romance with Johnny Galecki's character. The fact that Alex and Leonard didn't have a romance in The Big Bang Theory is a missed story according to ...

Many of the characters who appeared in The Big Bang Theory only for a cameo helped add depth to key details that were crucial in the broader context. How could Leonard and Penny become a couple ...