It wasn’t expected, but when Sheldon and Amy finally locked lips during last Thursday’s (Feb. 6) episode of “The Big Bang Theory,” it forever altered the landscape of the long-running CBS series — something that’s not lost on the actors behind the characters, Jim Parsons and Mayim Bialik.

In a new interview released by CBS, Parsons breaks down the surprisingly touching moment, which was never thought to be in the cards for the couple. “When the relationship agreement was laid out, there were no parameters laid out for a kiss,” he says. “What made Sheldon kiss Amy? Frankly, it came out of anger.”

But that anger quickly subsided, giving way to something that left the character, and the audience, wildly surprised. “The viewer, as well as me, was left to assume, I think, that he enjoyed it once he got there,” Parsons says. “Unexpectedly, unpremeditated, but once those lips landed together, he was like, ‘This is not bad.'”

The Emmy-winning actor recognizes full well the weight of the moment. “It’s undeniable that there’s been change, and there’s been growth,” he admits. “This is new territory, which is exciting.”

Bialik was equally surprised by the moment, but more so by the reaction it garnered  than the event itself. “I was startled that my internal acting process (for lack of a better word) has a physical representation that it so striking,” she writes in a blog post for “Consciously, I have little notion of how I will physically represent things as an actor.

“When there is no physical action scripted or indicated, I simply act emotions and those emotions sometimes have a physical representation and just are,” she continues. “I don’t know if that makes much sense, but Actor Mayim representing Fictional Character Amy in such a physical way with this kiss is as touching to me as it is to you.”

“The Big Bang Theory” airs Thursdays at 8 p.m. ET/PT on CBS.

Posted by:Billy Nilles