Watch Will Ferrell because he's hysterical

Will Ferrell is upset, and Kristen Stewart is the woman to blame.

The Campaign star was inconsolable when he visited Conan Thursday, and host Conan O'Brien struggled to figure out why. Finally, Ferrell, 45, explained through sobs what had him all worked up: Stewart cheating on boyfriend Robert Pattinson, 26, with her 41-year-old Snow White & the Huntsman director Rupert Sanders. Watch the hilarious video below

"There's this actress, Kristen Stewart, OK? She goes by K-Stew. And, uh, she had a boyfriend, right? Robert Patterson. He's R-Patz. And she cheated on him," he said as he was overcome with tears. "And they've broken up, and they're not gonna get back together ever. And what they had was so special, Conan! You don't even know what they had! They were in love! And she just threw it all away!"

O'Brien, clearly in on the joke, tried to console Ferrell but to no avail.

"It's not gonna be fine, ever!" Ferrell yelled. "Never gonna be fine! What they had was so special. You don't even know! You would never know! She is a trampire!"

If you laughed send it to your friends and make them smile too!