"F R I D A Y @badgalriri," he captioned two photos of Rihanna on set of their music video for the song "This Is What You Came For."
The late night post came shortly after Harris tried to erase all traces of his relationship with 26-year-old Swift from his Instagram. The "Shake It Off" singer also erased photos of her time with Harris.
After photos emerged showing Swift and actor Hiddleston getting cozy, a source told PEOPLE that Harris, 32, wasunaware of a budding romance between the two. It is to be noted that the couple were also photographed exchanging kisses in Rhode Island.
"He did not know Taylor and Tom were together," the source said, while a Harris pal added that the star had "moved on" and was "happy."