What Really Went Down Between Sylvester Stallone and Casey Affleck at the 2017 Golden Globes

Why the Rocky star wouldn't sit at the same table as the Best Actor winner

Sylvester Stallone's three daughters took the stage in unison on Sunday night as Miss Golden Globes 2017...but their father was no where to be seen in the crowd.

A source tells E! News the Rocky star was supposed to be seated near Casey Affleck and Matt Damon at the Manchester by the Sea table. However, we're told when Stallone and his wife Jennifer Flavin arrived while the filmed segment of Jimmy Fallon's opening number was rolling, there was only one seat available.

"He was understandably upset," the source explained.

Another onlooker told us Affleck and the rest of the stars at his table were shuffling around trying to make more room for additional chairs—which proved to be difficult considering the tightness of the seating arrangements as they were—and they weren't sure what to do. Thus, Stallone and Flavin decided to retreat to the green room and watch the show from behind-the-scenes.

At the commercial break, the stage hands made room for the couple at the table, giving them a prime seat facing the stage.

However, Stallone decided to stay in the green room. Our insider said Affleck was backstage later on in the evening ahead of presenting and went up to talk with Stallone, acknowledging that it was an unfortunate situation and attempting to smooth things over, but the 70-year-old wouldn't have it.

"Casey was nothing but gracious," the source explained. "Stallone was horrible to him and told him to get out of his face."

Still, a rep for Stallone tells E! News he enjoyed the special evening. "Sylvester Stallone had a wonderful evening attending and presenting at the Golden Globes and celebrating with his family and friends," the rep said.

Despite everything, Affleck also enjoyed his huge night. He took home his first-ever Golden Globe and one of the biggest awards of the evening: Best Actor in a Motion Picture, Drama.

Following his big win, he still could hardly believe it. Chatting with E! News at the Amazon after-party, he said "It's really nice. To hear my name called was a kind of other-worldly, surreal, strange experience."

He continued, "This was a very different room. This was a room full of people who are very, very impressive and have been for years. They have a lot of presence and you're sitting next to them and watching them on stage, and Meryl Streep makes that speech and people are up there saying incredible things." 

In all honesty, Affleck admitted he couldn't believe he stacked among the stars at the show. "They're incredible people who have been doing this forever," he said. "So it's all pretty dazzling and overwhelming."

(People was the first to report the story).