When you're a celebrity, you always have to assume there's a camera on you, even when you're just having a run-of-the-mill fight in the stands at Wimbledon.
A bearded Cooper was seen speaking intensely to Shayk, who appears to be dabbing tears out of her eyes, before crossing her arms and refusing to look at him.
While there is no way to know for sure if the two really are fighting, or what they could be possibly fighting about, that didn't stop the Internet from speculating wildly the way the Internet loves to do.
Photo: Getty Images
The 24-year-old English model dated the Hangover star for two years, from March 2013 to March 2015, one month before Cooper sparked a relationship with
his current lady love.
Is Waterhouse's presence why the two were fighting? The world may never know (but online commenters seem pretty sure).