The superstar singer has been the subject of comments and suggestions a romance was blossoming between the "A Star Is Born" director and star, thanks to their undeniable chemistry on and off the screen.
According to Britain's The Sun newspaper, as Gaga took to the stage in Las Vegas on Saturday, she was heckled by calls from the audience asking where Bradley was. "They told me it wouldn't work and they tried to change me, but I never let them".
The duet earned the pair a standing ovation with their stunning rendition of the song, but fans began speculating as to whether there was anything romantic between Gaga and Bradley - despite the fact that Irina Shayk, the mother of Bradley's two-year-old daughter Lea, was in the front row.
News that Bradley Cooper and Irina Shayk have split up became public last week, and now, a source is speaking about when the rift in their relationship started. The supermodel and the Oscar victor started dating in 2015, and welcomed their daughter Lea De Seine in March 2017.
Earlier reports said that Irina had moved out of the house she shared with her boyfriend.
"It seems Bradley hasn't spent any time with Lady Gaga", a source told the outlet.
However, Gaga slammed the rumours during an interview with Jimmy Kimmel. That's what we wanted you to see.
"It's not looking like there's much long left for the two of them together".
"Once Bradley met Lady Gaga things were strained, but he always told Irina he was just acting and there was nothing going on", an insider revealed to Radar.
Bradley Cooper and Irina Shayk were unable to fix their relationship after drifting apart. The "Shallow" singer recently performed in Las Vegas and asked everyone to stay kind and if they can't stay kind then they can f**k off.