Scarlett Johansson and Ryan Reynolds
ENF/Fame; Evan Agostini/AP
"[The report] is completely untrue," the reps tell PEOPLE. "Warner Brothers never planned to have Green Lantern as part of their panel at this year's Comic-Con and Ryan is in Europe shooting a film."
Reports have circulated online that Johansson, 24, and Reynolds, 32, got into a heated argument which caused him to skip the popular annual event.
Adds a source close to the couple, "Any reports of a fight are ridiculous." Johansson and Reynolds quietly tied the knot in September 2008.
Reporting by JULIE JORDAN





