04/16/2012 04:30 pm ET Updated Apr 17, 2012

Jennifer Aniston, Brad Pitt: Actress 'Doesn't Care' About Pitt's Engagement To Angelina Jolie

With news of Angelina Jolie and Brad Pitt's engagement, a custom-designed ring and general wedding bell jubilation for one of Hollywood's biggest couples, this was sort of inevitable. So, since the nosy want to know: Pitt's constantly scrutinized ex Jennifer Aniston has told those close to her that she couldn't care less about his engagement to Jolie.

"She doesn't care. She really doesn't. She's happy with Justin [Theroux]. She'll probably marry him. She's moved on. People don't want to believe it, but she has," a source told E! News correspondent Marc Malkin.

Aniston, 43, married Pitt, 48, in 2000; the couple divorced in 2005, after rumors began to fly that Pitt had fallen for Jolie, his "Mr. and Mrs. Smith" co-star. Aniston and Pitt's subsequent breakup was famously splashed all over tabloid headlines and remarkably continues to retain impact even today: according to Google Insights, a top-related search term for Aniston is "Brad Pitt."

CORRECTION: An earlier version of this article stated that Aniston and Pitt were married in 1998. They were married in 2000.