The 'Applause' singer seems to have parted ways with her 40-year-old music manager, reported Us magazine.
"It's sad but also liberating at the same time. One door closes and another opens," according to a source. Carter helped launch the 27-year-old pop star's career after signing her in 2007.
Gaga, who was also hit with split rumours with boyfriend Taylor Kinney, defused the gossip by kissing the 32-year-old actor backstage at the YouTube music award show.
Gaga and Kinney first met in July 2011 after Kinney appeared in the singer's "You And I" music video. They started dating several months later, briefly split in May 2012, and got back together the following month.