A friend of the actress told Page Six the pair "became close" while shooting Kathryn Bigelow's film about the capture of Osama Bin Laden.

© WENN / Brian To/WENN.com

© WENN
They were also recently observed embracing during a screening of Zero Dark Thirty in Los Angeles.
A separate source offered conflicting information by acknowledging that Chastain and Ramirez have grown very close, but stressed they are "just good friends".
Representatives for the stars have declined to comment on the dating rumours.
Chastain's beauty was recently praised by Zero Dark Thirty co-star Kyle Chandler, who admitted he was often distracted during their scenes together.
"She is very difficult to work with and I'll tell you why. The scene, especially when you get up close to her, it's very hard to do because her eyes are so intensely blue you fall into them. Literally," Chandler quipped.
Zero Dark Thirty opens in the US on December 19 and in the UK on January 25.
> Zero Dark Thirty prequel is a possibility










