The two actresses share the same agent, and "Eva has informed her that any role Jessica goes up for, she wants to audition for as well," a source close to the situation told Radar.
The 2 Fast 2 Furious bombshell, 40, "feels an intense one-sided rivalry that stems from when she lost out to Jessica for the role of Maya in Zero Dark Thirty. "Eva desperately wanted to be considered for the part as she's tired of being typecast as a love interest and wants to be a leading lady."
Mendes jealously looked on instead as Chastain, 37, rode the role to an Oscar nomination.
"Their agent is caught in the middle and is trying hard to keep them apart and on different career tracks, but Eva’s declaration that she wants to audition for the same roles has made things all the more complicated," the source revealed to Radar.
"They are obviously two completely different types.
"Jessica’s pretty much in the dark about it but it’s only a matter of time before she hears that Eva’s reading for the same parts.”