Um, Kaley Cuoco Is WAY More Affectionate With Johnny Galecki Than Penny Is With Leonard

Goodbyes are tough-Penny and Leonard, The Big Bang Theory’s beloved on-again, off-again couple, get it. And, btw, so do the actors that play them: real-life besties Kaley Cuoco and Johnny Galecki.

But, as they say, all good things must come to the end, even when that thing is one of the longest-running sitcoms in television history. While you might already be in tears over tonight's series finale of The Big Bang Theory (no judgment), you don't have to let go of your favorite characters just yet.

To soften the blow of the TBBT series finale-and prepare yourself to binge-watch all the hilarious reruns-peep this body-language analysis comparing the show’s central romance between Penny and Leonard to the real-life friendship between the actors themselves, Kaley and Johnny.

Jane Greer, PhD, body language expert and author of What About Me? Stop Selfishness From Ruining Your Relationship, took a deep dive into both the characters' and the stars' lives. Prepare for a seriously big bang of shock (sorry, had to)...