Sunday night’s red carpet was brimming with fabulous celebrities, but at least two of them decided to stay home ... with each other.

Renee Zellweger and Bradley Cooper, who starred alongside each other in Case 39, were enjoying a homey celebration in Pennsylvania while others were parading their designer clothes.

The Globes ceremony was plenty exciting, but it was the private Zellweger-Cooper party that drew the real sparks.

The pair were together at Cooper’s mother’s house when a fire broke out. But don’t panic. “It was not a very major fire,” reported one official. “The fireplace got a little out of control,” he explained. “No one was hurt. No one was transported to the hospital.”

Now let’s get to the real meat of the story: Zellweger, Cooper and a roaring fire. Maybe the real sparks weren’t contained to the fireplace alone, hmmm? The stars, both previously married once, have been quietly dating for about a year.