FRIENDS NO MORE! JEN & COURTENEY PFFFT

NationalEnquirer.com

FOR two decades, just about nothing could come between former “Friends” co-stars Jennifer Aniston and Courteney Cox – but now it looks like Jen’s fiancé Justin Theroux has managed to create a rift!

A source says that Jen skipped Courteney’s 49th birthday bash because control-freak Justin wants her to stop hanging out with all her old pals – and Cox is so upset she’s ready to kiss the friendship goodbye for good.

On June 16, Courteney and her closest buddies, including actresses Laura Dern and Isla Fisher, jewelry designer Jennifer Meyer, “Cougar Town” co-stars Busy Philipps and Christa Miller and daughter Coco, gathered at Giorgio Baldi restaurant in Santa Monica. But her best friend of 20 years was noticeably missing.

“Jen’s absence was the talk of the party,” revealed an insider. “Courteney invited her, but Jen hemmed and hawed and then finally bailed on coming altogether. She used a lame excuse of being tired from too much work.”

But Courteney later learned the truth – that Justin, 41, wants his 44-year-old fiancée to “freshen up” her friends list. And the source says he gave her so much grief about going to the party that she finally decided to decline the invitation.

As The ENQUIRER recently reported, Justin is delaying their wedding to focus on his career but Jennifer wants to marry him as soon as possible.

“Her world revolves around Justin,” the in­sider explained. “After they hooked up, she dropped the friends who had stuck by her through her difficult split from Brad Pitt.”

Courteney has been understand­ing of Jen’s flaky behavior so far, but she’s finally at the end of her rope, says the source – and she’s even talking about boycotting Jen and Justin’s wedding.

“Courteney is sick of forgiving and forgetting,” the insider added. “She’s been slighted by Jen one too many times now.”