The Sun Online revealed the 33-year-old supermodel moved out of their home earlier this month after the A Star Is Born actor’s steamy performance with the singer at the Oscars.
Rumours swirled that Irina was unhappy after the show but according to US reports, she flagged issues to Bradley when he filmed the movie with Gaga.
A source claimed to Radar Online: “Bradley’s relationship with baby mama Irina began to really fall apart when he started filming with Gaga and she accused him numerous times of cheating on her with his co-star.
“Ever since then, Irina has not been able to trust Bradley at all.”
What’s more, according to insiders the couple had been fighting constantly – often over Gaga.
Irina was said to have been uncomfortable with their close bond after he “started spending time with Gaga at odd hours.”
However, Gaga blasted her fans while on stage after they heckled her by asking where Bradley was just days after his split with Irina.
The singer was performing in Las Vegas last weekend when she lost her rag with the taunts, amid speculation Gaga’s chemistry with her A Star Is Born co-star played a factor in his break-up.
Before performing Shallow, the break-out hit from the film, she told the crowd: “And one more thing, be kind or f**k off.”
Lady Gaga launched an F-word rant at fans when they heckled her by asking where Bradley Cooper[/caption]
In February, Gaga confirmed she’d ended her engagement to music mogul Christian Carino after two years together.
Last week, model Irina moved out of the home she shared with Bradley.
They had been together for four years and have a two-year-old daughter together.
Gaga and Bradley gave a sizzling performance of Shallow in Las Vegas in January and again at the Oscars in February, with fans admitting they thought the co-stars had “amazing chemistry”.
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Their close friendship seemed to cause an issue with Irina, who unfollowed Gaga on Twitter.
Irina had kept a low profile after the break-up but over the weekend posted pictures from her new fashion campaign shoot in Iceland.
Gaga has always insisted she is just good friends with Bradley. Referring to their sensual Oscars performance, she said: “Yes, people saw love. And guess what? That’s what we wanted you to see.”
The Sun Online has contacted Bradley Cooper’s representatives for comment.
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by – TheSun TV and Showbiz