Jessica Simpson looked fantastic in a simple black dress as she arrived to "The Late Show With David Letterman" yesterday afternoon. While Jessica was doing press rounds, her boyfriend Tony Romo kept busy helping a stranded couple on the road with a flat tire. 

While commuting with his team, Tony saw the man and woman attempting to fix their flat tire unsuccessfully. He stopped and lent a helping hand.

"All of a sudden I hear a voice say, 'Do you need help?'" Sharon, 53, tells PEOPLE. Without realizing it was Jessica Simpson's beau who had come to their aid, the couple and the football star went at the flat tire together.

After fiddling with the air compressor switch on the car jack, the tire inflated. "At that point, I looked at him and thought, 'Dang, he looks familiar,'" Sharon says. "I go, 'You know what? You look like Tony Romo.' He looked down and just gave me that boyish smile he's got. Then he said, 'That's because I am.'" "I just screamed as loud as I could," Sharon says. "Then I grabbed him and hugged him."

Talented, handsome, successful, and a gentleman... dang Jess!

Photos by WENN