Kinney, 37, who split from Gaga, 32, in July 2016, has 'liked' a really harsh comment about Gaga on Instagram.
A couple of days after the Oscars, Kinney enjoyed some time in Chicago with professional ice-hockey player Bryan Bickell.
"Stoked to be out with my guy @abickell and his wife @abickell for the weekend. 29. Good times in Chicago @bickellfoundation cheers @chicagocutsteakhouse," he wrote.
A fan then commented, "Stoked you got away from Gaga. #Hollyweird."
Taylor then 'liked' that comment.
At the time of Kinney and Gaga's split, she had actually labelled it a 'break'.
"Taylor and I have always believed we are soulmates," she wrote. "Just like all couples we have ups and downs, and we have been taking a break. We are both ambitious artists, hoping to work through long-distance and complicated schedules to continue the simple love we have always shared. Please root on us. We're just like everybody else and we really love each other."
Since then, Gaga got engaged to talent agent Christian Carino, but they sadly ended their engagement earlier this month.
Watch below... Lady Gaga's emotional speech after winning Best Song at the Oscars: