“Reese got a little too trigger-happy when she saw a picture of Brad looking incredibly hot and laid down a heart-eye emoji and the words ‘Oh dear’ in response,” an insider told GLOBE referring to her comment made on an Instagram pic.
WATCH: Jennifer Aniston and Reese Witherspoon's scary on-set moment
“Of course, it took around 20 seconds for it to get back to Jen, who was insulted. Sure, it might look like harm- less fun, but Jen felt it was very disrespectful,” they added.
According to the source, Jen is particularly annoyed that her pal has been “lusting after Brad all along.”
“Everyone in Jen’s circle know she and Brad have an understanding. They have reconnected and have been in contact behind the scenes.”
The source also claims that Brad and Jen are very close to “coming out as a couple” but are keeping everything on the DL for now and Reese’s move has only made Jen distance herself from Reese.
“There are very few people in this town that Jen trusts and, well, Reese now isn’t one of them. She’s going to be watching this one from now on!”
Sources tell American OK! magazine that Jennifer is planning a sit-down interview where she will spill all on her plans, with a source noting: ‘She’s not going to hold back’ as she reportedly reveals she 'never gave up' on either Brad or her family wishes.
‘She may cry, she may laugh, but she’ll be honest,’ the source is quoted as saying. ‘She’s ready to break her silence.’
And nothing will be off limits, as Jennifer and her ex Brad have grown ‘extremely close’ since his split from ex-wife Angelina Jolie.
‘Jen eventually moved on and decided to reach out and try to forgive Brad for the pain he caused,’ the insider told the publication.