Over the weekend, the Olympic champion was spotted with Britney Spears' ex-boyfriend Charlie Ebersol twice at the U.S. Open.
An eyewitness told Page Six about the two, who viewed the men’s final in a suite, "When they thought people weren't looking, Lindsey and Charlie were very close. When they got out of the car, they were hanging on each other and had the spark of a new relationship. But as soon as there were cameras, they would separate so as not to be seen together."
A rep for Lindsey tried to shoot down the rumors by saying, "I can tell you with 100 percent certainty that they are just friends."
Charlie and Britney ended their relationship in June.